source/blender/editors/space_view3d/view3d_draw.c

   1 /*
   2  * ***** BEGIN GPL LICENSE BLOCK *****
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; either version 2
   7  * of the License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software Foundation,
  16  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  17  *
  18  * The Original Code is Copyright (C) 2008 Blender Foundation.
  19  * All rights reserved.
  20  *
  21  *
  22  * Contributor(s): Blender Foundation
  23  *
  24  * ***** END GPL LICENSE BLOCK *****
  25  */
  26
  27 /** \file blender/editors/space_view3d/view3d_draw.c
  28  *  \ingroup spview3d
  29  */
  30
  31 #include <string.h>
  32 #include <stdio.h>
  33 #include <math.h>
  34
  35 #include "DNA_armature_types.h"
  36 #include "DNA_camera_types.h"
  37 #include "DNA_customdata_types.h"
  38 #include "DNA_object_types.h"
  39 #include "DNA_group_types.h"
  40 #include "DNA_mesh_types.h"
  41 #include "DNA_key_types.h"
  42 #include "DNA_lamp_types.h"
  43 #include "DNA_scene_types.h"
  44 #include "DNA_world_types.h"
  45 #include "DNA_brush_types.h"
  46
  47 #include "MEM_guardedalloc.h"
  48
  49 #include "BLI_blenlib.h"
  50 #include "BLI_math.h"
  51 #include "BLI_jitter.h"
  52 #include "BLI_utildefines.h"
  53 #include "BLI_endian_switch.h"
  54 #include "BLI_threads.h"
  55
  56 #include "BKE_anim.h"
  57 #include "BKE_camera.h"
  58 #include "BKE_context.h"
  59 #include "BKE_customdata.h"
  60 #include "BKE_DerivedMesh.h"
  61 #include "BKE_image.h"
  62 #include "BKE_key.h"
  63 #include "BKE_main.h"
  64 #include "BKE_object.h"
  65 #include "BKE_global.h"
  66 #include "BKE_paint.h"
  67 #include "BKE_scene.h"
  68 #include "BKE_screen.h"
  69 #include "BKE_unit.h"
  70 #include "BKE_movieclip.h"
  71
  72 #include "RE_engine.h"
  73
  74 #include "IMB_imbuf_types.h"
  75 #include "IMB_imbuf.h"
  76 #include "IMB_colormanagement.h"
  77
  78 #include "BIF_gl.h"
  79 #include "BIF_glutil.h"
  80
  81 #include "WM_api.h"
  82
  83 #include "BLF_api.h"
  84 #include "BLT_translation.h"
  85
  86 #include "ED_armature.h"
  87 #include "ED_keyframing.h"
  88 #include "ED_gpencil.h"
  89 #include "ED_screen.h"
  90 #include "ED_space_api.h"
  91 #include "ED_screen_types.h"
  92 #include "ED_transform.h"
  93
  94 #include "UI_interface.h"
  95 #include "UI_interface_icons.h"
  96 #include "UI_resources.h"
  97
  98 #include "GPU_draw.h"
  99 #include "GPU_framebuffer.h"
 100 #include "GPU_material.h"
 101 #include "GPU_compositing.h"
 102 #include "GPU_extensions.h"
 103 #include "GPU_select.h"
 104
 105 #include "view3d_intern.h"  /* own include */
 106
 107 /* prototypes */
 108 static bool view3d_stereo3d_active(wmWindow *win, Scene *scene, View3D *v3d, RegionView3D *rv3d);
 109 static void view3d_stereo3d_setup(Scene *scene, View3D *v3d, ARegion *ar);
 110 static void view3d_stereo3d_setup_offscreen(Scene *scene, View3D *v3d, ARegion *ar,
 111                                             float winmat[4][4], const char *viewname);
 112
 113 /* handy utility for drawing shapes in the viewport for arbitrary code.
 114  * could add lines and points too */
 115 // #define DEBUG_DRAW
 116 #ifdef DEBUG_DRAW
 117 static void bl_debug_draw(void);
 118 /* add these locally when using these functions for testing */
 119 extern void bl_debug_draw_quad_clear(void);
 120 extern void bl_debug_draw_quad_add(const float v0[3], const float v1[3], const float v2[3], const float v3[3]);
 121 extern void bl_debug_draw_edge_add(const float v0[3], const float v1[3]);
 122 extern void bl_debug_color_set(const unsigned int col);
 123 #endif
 124
 125 void circf(float x, float y, float rad)
 126 {
 127         GLUquadricObj *qobj = gluNewQuadric();
 128
 129         gluQuadricDrawStyle(qobj, GLU_FILL);
 130
 131         glPushMatrix();
 132
 133         glTranslatef(x, y, 0.0);
 134
 135         gluDisk(qobj, 0.0,  rad, 32, 1);
 136
 137         glPopMatrix();
 138
 139         gluDeleteQuadric(qobj);
 140 }
 141
 142 void circ(float x, float y, float rad)
 143 {
 144         GLUquadricObj *qobj = gluNewQuadric();
 145
 146         gluQuadricDrawStyle(qobj, GLU_SILHOUETTE);
 147
 148         glPushMatrix();
 149
 150         glTranslatef(x, y, 0.0);
 151
 152         gluDisk(qobj, 0.0,  rad, 32, 1);
 153
 154         glPopMatrix();
 155
 156         gluDeleteQuadric(qobj);
 157 }
 158
 159
 160 /* ********* custom clipping *********** */
 161
 162 static void view3d_draw_clipping(RegionView3D *rv3d)
 163 {
 164         BoundBox *bb = rv3d->clipbb;
 165
 166         if (bb) {
 167                 const unsigned int clipping_index[6][4] = {
 168                         {0, 1, 2, 3},
 169                         {0, 4, 5, 1},
 170                         {4, 7, 6, 5},
 171                         {7, 3, 2, 6},
 172                         {1, 5, 6, 2},
 173                         {7, 4, 0, 3}
 174                 };
 175
 176                 /* fill in zero alpha for rendering & re-projection [#31530] */
 177                 unsigned char col[4];
 178                 UI_GetThemeColor4ubv(TH_V3D_CLIPPING_BORDER, col);
 179                 glColor4ubv(col);
 180
 181                 glEnable(GL_BLEND);
 182                 glEnableClientState(GL_VERTEX_ARRAY);
 183                 glVertexPointer(3, GL_FLOAT, 0, bb->vec);
 184                 glDrawElements(GL_QUADS, sizeof(clipping_index) / sizeof(unsigned int), GL_UNSIGNED_INT, clipping_index);
 185                 glDisableClientState(GL_VERTEX_ARRAY);
 186                 glDisable(GL_BLEND);
 187         }
 188 }
 189
 190 void ED_view3d_clipping_set(RegionView3D *rv3d)
 191 {
 192         double plane[4];
 193         const unsigned int tot = (rv3d->viewlock & RV3D_BOXCLIP) ? 4 : 6;
 194         unsigned int a;
 195
 196         for (a = 0; a < tot; a++) {
 197                 copy_v4db_v4fl(plane, rv3d->clip[a]);
 198                 glClipPlane(GL_CLIP_PLANE0 + a, plane);
 199                 glEnable(GL_CLIP_PLANE0 + a);
 200         }
 201 }
 202
 203 /* use these to temp disable/enable clipping when 'rv3d->rflag & RV3D_CLIPPING' is set */
 204 void ED_view3d_clipping_disable(void)
 205 {
 206         unsigned int a;
 207
 208         for (a = 0; a < 6; a++) {
 209                 glDisable(GL_CLIP_PLANE0 + a);
 210         }
 211 }
 212 void ED_view3d_clipping_enable(void)
 213 {
 214         unsigned int a;
 215
 216         for (a = 0; a < 6; a++) {
 217                 glEnable(GL_CLIP_PLANE0 + a);
 218         }
 219 }
 220
 221 static bool view3d_clipping_test(const float co[3], const float clip[6][4])
 222 {
 223         if (plane_point_side_v3(clip[0], co) > 0.0f)
 224                 if (plane_point_side_v3(clip[1], co) > 0.0f)
 225                         if (plane_point_side_v3(clip[2], co) > 0.0f)
 226                                 if (plane_point_side_v3(clip[3], co) > 0.0f)
 227                                         return false;
 228
 229         return true;
 230 }
 231
 232 /* for 'local' ED_view3d_clipping_local must run first
 233  * then all comparisons can be done in localspace */
 234 bool ED_view3d_clipping_test(const RegionView3D *rv3d, const float co[3], const bool is_local)
 235 {
 236         return view3d_clipping_test(co, is_local ? rv3d->clip_local : rv3d->clip);
 237 }
 238
 239 /* ********* end custom clipping *********** */
 240
 241
 242 static void drawgrid_draw(ARegion *ar, double wx, double wy, double x, double y, double dx)
 243 {
 244         double verts[2][2];
 245
 246         x += (wx);
 247         y += (wy);
 248
 249         /* set fixed 'Y' */
 250         verts[0][1] = 0.0f;
 251         verts[1][1] = (double)ar->winy;
 252
 253         /* iter over 'X' */
 254         verts[0][0] = verts[1][0] = x - dx * floor(x / dx);
 255         glEnableClientState(GL_VERTEX_ARRAY);
 256         glVertexPointer(2, GL_DOUBLE, 0, verts);
 257
 258         while (verts[0][0] < ar->winx) {
 259                 glDrawArrays(GL_LINES, 0, 2);
 260                 verts[0][0] = verts[1][0] = verts[0][0] + dx;
 261         }
 262
 263         /* set fixed 'X' */
 264         verts[0][0] = 0.0f;
 265         verts[1][0] = (double)ar->winx;
 266
 267         /* iter over 'Y' */
 268         verts[0][1] = verts[1][1] = y - dx * floor(y / dx);
 269         while (verts[0][1] < ar->winy) {
 270                 glDrawArrays(GL_LINES, 0, 2);
 271                 verts[0][1] = verts[1][1] = verts[0][1] + dx;
 272         }
 273
 274         glDisableClientState(GL_VERTEX_ARRAY);
 275 }
 276
 277 #define GRID_MIN_PX_D   6.0
 278 #define GRID_MIN_PX_F 6.0f
 279
 280 static void drawgrid(UnitSettings *unit, ARegion *ar, View3D *v3d, const char **grid_unit)
 281 {
 282         /* extern short bgpicmode; */
 283         RegionView3D *rv3d = ar->regiondata;
 284         double wx, wy, x, y, fw, fx, fy, dx;
 285         double vec4[4];
 286         unsigned char col[3], col2[3];
 287
 288         fx = rv3d->persmat[3][0];
 289         fy = rv3d->persmat[3][1];
 290         fw = rv3d->persmat[3][3];
 291
 292         wx = (ar->winx / 2.0); /* because of rounding errors, grid at wrong location */
 293         wy = (ar->winy / 2.0);
 294
 295         x = (wx) * fx / fw;
 296         y = (wy) * fy / fw;
 297
 298         vec4[0] = vec4[1] = v3d->grid;
 299
 300         vec4[2] = 0.0;
 301         vec4[3] = 1.0;
 302         mul_m4_v4d(rv3d->persmat, vec4);
 303         fx = vec4[0];
 304         fy = vec4[1];
 305         fw = vec4[3];
 306
 307         dx = fabs(x - (wx) * fx / fw);
 308         if (dx == 0) dx = fabs(y - (wy) * fy / fw);
 309
 310         glLineWidth(1.0f);
 311
 312         glDepthMask(GL_FALSE);     /* disable write in zbuffer */
 313
 314         /* check zoom out */
 315         UI_ThemeColor(TH_GRID);
 316
 317         if (unit->system) {
 318                 /* Use GRID_MIN_PX * 2 for units because very very small grid
 319                  * items are less useful when dealing with units */
 320                 const void *usys;
 321                 int len, i;
 322                 double dx_scalar;
 323                 float blend_fac;
 324
 325                 bUnit_GetSystem(unit->system, B_UNIT_LENGTH, &usys, &len);
 326
 327                 if (usys) {
 328                         i = len;
 329                         while (i--) {
 330                                 double scalar = bUnit_GetScaler(usys, i);
 331
 332                                 dx_scalar = dx * scalar / (double)unit->scale_length;
 333                                 if (dx_scalar < (GRID_MIN_PX_D * 2.0))
 334                                         continue;
 335
 336                                 /* Store the smallest drawn grid size units name so users know how big each grid cell is */
 337                                 if (*grid_unit == NULL) {
 338                                         *grid_unit = bUnit_GetNameDisplay(usys, i);
 339                                         rv3d->gridview = (float)((scalar * (double)v3d->grid) / (double)unit->scale_length);
 340                                 }
 341                                 blend_fac = 1.0f - ((GRID_MIN_PX_F * 2.0f) / (float)dx_scalar);
 342
 343                                 /* tweak to have the fade a bit nicer */
 344                                 blend_fac = (blend_fac * blend_fac) * 2.0f;
 345                                 CLAMP(blend_fac, 0.3f, 1.0f);
 346
 347
 348                                 UI_ThemeColorBlend(TH_HIGH_GRAD, TH_GRID, blend_fac);
 349
 350                                 drawgrid_draw(ar, wx, wy, x, y, dx_scalar);
 351                         }
 352                 }
 353         }
 354         else {
 355                 const double sublines    = v3d->gridsubdiv;
 356                 const float  sublines_fl = v3d->gridsubdiv;
 357
 358                 if (dx < GRID_MIN_PX_D) {
 359                         rv3d->gridview *= sublines_fl;
 360                         dx *= sublines;
 361
 362                         if (dx < GRID_MIN_PX_D) {
 363                                 rv3d->gridview *= sublines_fl;
 364                                 dx *= sublines;
 365
 366                                 if (dx < GRID_MIN_PX_D) {
 367                                         rv3d->gridview *= sublines_fl;
 368                                         dx *= sublines;
 369                                         if (dx < GRID_MIN_PX_D) {
 370                                                 /* pass */
 371                                         }
 372                                         else {
 373                                                 UI_ThemeColor(TH_GRID);
 374                                                 drawgrid_draw(ar, wx, wy, x, y, dx);
 375                                         }
 376                                 }
 377                                 else {  /* start blending out */
 378                                         UI_ThemeColorBlend(TH_HIGH_GRAD, TH_GRID, dx / (GRID_MIN_PX_D * 6.0));
 379                                         drawgrid_draw(ar, wx, wy, x, y, dx);
 380
 381                                         UI_ThemeColor(TH_GRID);
 382                                         drawgrid_draw(ar, wx, wy, x, y, sublines * dx);
 383                                 }
 384                         }
 385                         else {  /* start blending out (GRID_MIN_PX < dx < (GRID_MIN_PX * 10)) */
 386                                 UI_ThemeColorBlend(TH_HIGH_GRAD, TH_GRID, dx / (GRID_MIN_PX_D * 6.0));
 387                                 drawgrid_draw(ar, wx, wy, x, y, dx);
 388
 389                                 UI_ThemeColor(TH_GRID);
 390                                 drawgrid_draw(ar, wx, wy, x, y, sublines * dx);
 391                         }
 392                 }
 393                 else {
 394                         if (dx > (GRID_MIN_PX_D * 10.0)) {  /* start blending in */
 395                                 rv3d->gridview /= sublines_fl;
 396                                 dx /= sublines;
 397                                 if (dx > (GRID_MIN_PX_D * 10.0)) {  /* start blending in */
 398                                         rv3d->gridview /= sublines_fl;
 399                                         dx /= sublines;
 400                                         if (dx > (GRID_MIN_PX_D * 10.0)) {
 401                                                 UI_ThemeColor(TH_GRID);
 402                                                 drawgrid_draw(ar, wx, wy, x, y, dx);
 403                                         }
 404                                         else {
 405                                                 UI_ThemeColorBlend(TH_HIGH_GRAD, TH_GRID, dx / (GRID_MIN_PX_D * 6.0));
 406                                                 drawgrid_draw(ar, wx, wy, x, y, dx);
 407                                                 UI_ThemeColor(TH_GRID);
 408                                                 drawgrid_draw(ar, wx, wy, x, y, dx * sublines);
 409                                         }
 410                                 }
 411                                 else {
 412                                         UI_ThemeColorBlend(TH_HIGH_GRAD, TH_GRID, dx / (GRID_MIN_PX_D * 6.0));
 413                                         drawgrid_draw(ar, wx, wy, x, y, dx);
 414                                         UI_ThemeColor(TH_GRID);
 415                                         drawgrid_draw(ar, wx, wy, x, y, dx * sublines);
 416                                 }
 417                         }
 418                         else {
 419                                 UI_ThemeColorBlend(TH_HIGH_GRAD, TH_GRID, dx / (GRID_MIN_PX_D * 6.0));
 420                                 drawgrid_draw(ar, wx, wy, x, y, dx);
 421                                 UI_ThemeColor(TH_GRID);
 422                                 drawgrid_draw(ar, wx, wy, x, y, dx * sublines);
 423                         }
 424                 }
 425         }
 426
 427
 428         x += (wx);
 429         y += (wy);
 430         UI_GetThemeColor3ubv(TH_GRID, col);
 431
 432         setlinestyle(0);
 433
 434         /* center cross */
 435         /* horizontal line */
 436         if (ELEM(rv3d->view, RV3D_VIEW_RIGHT, RV3D_VIEW_LEFT))
 437                 UI_make_axis_color(col, col2, 'Y');
 438         else UI_make_axis_color(col, col2, 'X');
 439         glColor3ubv(col2);
 440
 441         fdrawline(0.0,  y,  (float)ar->winx,  y);
 442
 443         /* vertical line */
 444         if (ELEM(rv3d->view, RV3D_VIEW_TOP, RV3D_VIEW_BOTTOM))
 445                 UI_make_axis_color(col, col2, 'Y');
 446         else UI_make_axis_color(col, col2, 'Z');
 447         glColor3ubv(col2);
 448
 449         fdrawline(x, 0.0, x, (float)ar->winy);
 450
 451         glDepthMask(GL_TRUE);  /* enable write in zbuffer */
 452 }
 453 #undef GRID_MIN_PX
 454
 455 /** could move this elsewhere, but tied into #ED_view3d_grid_scale */
 456 float ED_scene_grid_scale(Scene *scene, const char **grid_unit)
 457 {
 458         /* apply units */
 459         if (scene->unit.system) {
 460                 const void *usys;
 461                 int len;
 462
 463                 bUnit_GetSystem(scene->unit.system, B_UNIT_LENGTH, &usys, &len);
 464
 465                 if (usys) {
 466                         int i = bUnit_GetBaseUnit(usys);
 467                         if (grid_unit)
 468                                 *grid_unit = bUnit_GetNameDisplay(usys, i);
 469                         return (float)bUnit_GetScaler(usys, i) / scene->unit.scale_length;
 470                 }
 471         }
 472
 473         return 1.0f;
 474 }
 475
 476 float ED_view3d_grid_scale(Scene *scene, View3D *v3d, const char **grid_unit)
 477 {
 478         return v3d->grid * ED_scene_grid_scale(scene, grid_unit);
 479 }
 480
 481 static void drawfloor(Scene *scene, View3D *v3d, const char **grid_unit, bool write_depth)
 482 {
 483         float grid, grid_scale;
 484         unsigned char col_grid[3];
 485         const int gridlines = v3d->gridlines / 2;
 486
 487         if (v3d->gridlines < 3) return;
 488
 489         /* use 'grid_scale' instead of 'v3d->grid' from now on */
 490         grid_scale = ED_view3d_grid_scale(scene, v3d, grid_unit);
 491         grid = gridlines * grid_scale;
 492
 493         if (!write_depth)
 494                 glDepthMask(GL_FALSE);
 495
 496         UI_GetThemeColor3ubv(TH_GRID, col_grid);
 497
 498         glLineWidth(1);
 499
 500         /* draw the Y axis and/or grid lines */
 501         if (v3d->gridflag & V3D_SHOW_FLOOR) {
 502                 const int sublines = v3d->gridsubdiv;
 503                 float vert[4][3] = {{0.0f}};
 504                 unsigned char col_bg[3];
 505                 unsigned char col_grid_emphasise[3], col_grid_light[3];
 506                 int a;
 507                 int prev_emphasise = -1;
 508
 509                 UI_GetThemeColor3ubv(TH_BACK, col_bg);
 510
 511                 /* emphasise division lines lighter instead of darker, if background is darker than grid */
 512                 UI_GetColorPtrShade3ubv(col_grid, col_grid_light, 10);
 513                 UI_GetColorPtrShade3ubv(col_grid, col_grid_emphasise,
 514                                         (((col_grid[0] + col_grid[1] + col_grid[2]) + 30) >
 515                                          (col_bg[0] + col_bg[1] + col_bg[2])) ? 20 : -10);
 516
 517                 /* set fixed axis */
 518                 vert[0][0] = vert[2][1] = grid;
 519                 vert[1][0] = vert[3][1] = -grid;
 520
 521                 glEnableClientState(GL_VERTEX_ARRAY);
 522                 glVertexPointer(3, GL_FLOAT, 0, vert);
 523
 524                 for (a = -gridlines; a <= gridlines; a++) {
 525                         const float line = a * grid_scale;
 526                         const int is_emphasise = (a % sublines) == 0;
 527
 528                         if (is_emphasise != prev_emphasise) {
 529                                 glColor3ubv(is_emphasise ? col_grid_emphasise : col_grid_light);
 530                                 prev_emphasise = is_emphasise;
 531                         }
 532
 533                         /* set variable axis */
 534                         vert[0][1] = vert[1][1] = vert[2][0] = vert[3][0] = line;
 535
 536                         glDrawArrays(GL_LINES, 0, 4);
 537                 }
 538
 539                 glDisableClientState(GL_VERTEX_ARRAY);
 540         }
 541
 542         /* draw the Z axis line */
 543         /* check for the 'show Z axis' preference */
 544         if (v3d->gridflag & (V3D_SHOW_X | V3D_SHOW_Y | V3D_SHOW_Z)) {
 545                 glBegin(GL_LINES);
 546                 int axis;
 547                 for (axis = 0; axis < 3; axis++) {
 548                         if (v3d->gridflag & (V3D_SHOW_X << axis)) {
 549                                 float vert[3];
 550                                 unsigned char tcol[3];
 551
 552                                 UI_make_axis_color(col_grid, tcol, 'X' + axis);
 553                                 glColor3ubv(tcol);
 554
 555                                 zero_v3(vert);
 556                                 vert[axis] = grid;
 557                                 glVertex3fv(vert);
 558                                 vert[axis] = -grid;
 559                                 glVertex3fv(vert);
 560                         }
 561                 }
 562                 glEnd();
 563         }
 564
 565         glDepthMask(GL_TRUE);
 566 }
 567
 568
 569 static void drawcursor(Scene *scene, ARegion *ar, View3D *v3d)
 570 {
 571         int co[2];
 572
 573         /* we don't want the clipping for cursor */
 574         if (ED_view3d_project_int_global(ar, ED_view3d_cursor3d_get(scene, v3d), co, V3D_PROJ_TEST_NOP) == V3D_PROJ_RET_OK) {
 575                 const float f5 = 0.25f * U.widget_unit;
 576                 const float f10 = 0.5f * U.widget_unit;
 577                 const float f20 = U.widget_unit;
 578
 579                 glLineWidth(1);
 580                 setlinestyle(0);
 581                 cpack(0xFF);
 582                 circ((float)co[0], (float)co[1], f10);
 583                 setlinestyle(4);
 584                 cpack(0xFFFFFF);
 585                 circ((float)co[0], (float)co[1], f10);
 586                 setlinestyle(0);
 587
 588                 UI_ThemeColor(TH_VIEW_OVERLAY);
 589                 sdrawline(co[0] - f20, co[1], co[0] - f5, co[1]);
 590                 sdrawline(co[0] + f5, co[1], co[0] + f20, co[1]);
 591                 sdrawline(co[0], co[1] - f20, co[0], co[1] - f5);
 592                 sdrawline(co[0], co[1] + f5, co[0], co[1] + f20);
 593         }
 594 }
 595
 596 /* Draw a live substitute of the view icon, which is always shown
 597  * colors copied from transform_manipulator.c, we should keep these matching. */
 598 static void draw_view_axis(RegionView3D *rv3d, rcti *rect)
 599 {
 600         const float k = U.rvisize * U.pixelsize;   /* axis size */
 601         const float toll = 0.5;      /* used to see when view is quasi-orthogonal */
 602         float startx = k + 1.0f; /* axis center in screen coordinates, x=y */
 603         float starty = k + 1.0f;
 604         float ydisp = 0.0;          /* vertical displacement to allow obj info text */
 605         int bright = - 20 * (10 - U.rvibright); /* axis alpha offset (rvibright has range 0-10) */
 606         float vec[3];
 607         float dx, dy;
 608
 609         int axis_order[3] = {0, 1, 2};
 610         int axis_i;
 611
 612         startx += rect->xmin;
 613         starty += rect->ymin;
 614
 615         axis_sort_v3(rv3d->viewinv[2], axis_order);
 616
 617         /* thickness of lines is proportional to k */
 618         glLineWidth(2);
 619
 620         glEnable(GL_BLEND);
 621         glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 622
 623         for (axis_i = 0; axis_i < 3; axis_i++) {
 624                 int i = axis_order[axis_i];
 625                 const char axis_text[2] = {'x' + i, '\0'};
 626
 627                 zero_v3(vec);
 628                 vec[i] = 1.0f;
 629                 mul_qt_v3(rv3d->viewquat, vec);
 630                 dx = vec[0] * k;
 631                 dy = vec[1] * k;
 632
 633                 UI_ThemeColorShadeAlpha(TH_AXIS_X + i, 0, bright);
 634                 glBegin(GL_LINES);
 635                 glVertex2f(startx, starty + ydisp);
 636                 glVertex2f(startx + dx, starty + dy + ydisp);
 637                 glEnd();
 638
 639                 if (fabsf(dx) > toll || fabsf(dy) > toll) {
 640                         BLF_draw_default_ascii(startx + dx + 2, starty + dy + ydisp + 2, 0.0f, axis_text, 1);
 641
 642                         /* BLF_draw_default disables blending */
 643                         glEnable(GL_BLEND);
 644                 }
 645         }
 646
 647         glDisable(GL_BLEND);
 648 }
 649
 650 #ifdef WITH_INPUT_NDOF
 651 /* draw center and axis of rotation for ongoing 3D mouse navigation */
 652 static void draw_rotation_guide(RegionView3D *rv3d)
 653 {
 654         float o[3];    /* center of rotation */
 655         float end[3];  /* endpoints for drawing */
 656
 657         float color[4] = {0.0f, 0.4235f, 1.0f, 1.0f};  /* bright blue so it matches device LEDs */
 658
 659         negate_v3_v3(o, rv3d->ofs);
 660
 661         glEnable(GL_BLEND);
 662         glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 663         glPointSize(5);
 664         glEnable(GL_POINT_SMOOTH);
 665         glDepthMask(0);  /* don't overwrite zbuf */
 666
 667         if (rv3d->rot_angle != 0.0f) {
 668                 /* -- draw rotation axis -- */
 669                 float scaled_axis[3];
 670                 const float scale = rv3d->dist;
 671                 mul_v3_v3fl(scaled_axis, rv3d->rot_axis, scale);
 672
 673
 674                 glBegin(GL_LINE_STRIP);
 675                 color[3] = 0.0f;  /* more transparent toward the ends */
 676                 glColor4fv(color);
 677                 add_v3_v3v3(end, o, scaled_axis);
 678                 glVertex3fv(end);
 679
 680 #if 0
 681                 color[3] = 0.2f + fabsf(rv3d->rot_angle);  /* modulate opacity with angle */
 682                 /* ^^ neat idea, but angle is frame-rate dependent, so it's usually close to 0.2 */
 683 #endif
 684
 685                 color[3] = 0.5f;  /* more opaque toward the center */
 686                 glColor4fv(color);
 687                 glVertex3fv(o);
 688
 689                 color[3] = 0.0f;
 690                 glColor4fv(color);
 691                 sub_v3_v3v3(end, o, scaled_axis);
 692                 glVertex3fv(end);
 693                 glEnd();
 694
 695                 /* -- draw ring around rotation center -- */
 696                 {
 697 #define     ROT_AXIS_DETAIL 13
 698
 699                         const float s = 0.05f * scale;
 700                         const float step = 2.0f * (float)(M_PI / ROT_AXIS_DETAIL);
 701                         float angle;
 702                         int i;
 703
 704                         float q[4];  /* rotate ring so it's perpendicular to axis */
 705                         const int upright = fabsf(rv3d->rot_axis[2]) >= 0.95f;
 706                         if (!upright) {
 707                                 const float up[3] = {0.0f, 0.0f, 1.0f};
 708                                 float vis_angle, vis_axis[3];
 709
 710                                 cross_v3_v3v3(vis_axis, up, rv3d->rot_axis);
 711                                 vis_angle = acosf(dot_v3v3(up, rv3d->rot_axis));
 712                                 axis_angle_to_quat(q, vis_axis, vis_angle);
 713                         }
 714
 715                         color[3] = 0.25f;  /* somewhat faint */
 716                         glColor4fv(color);
 717                         glBegin(GL_LINE_LOOP);
 718                         for (i = 0, angle = 0.0f; i < ROT_AXIS_DETAIL; ++i, angle += step) {
 719                                 float p[3] = {s * cosf(angle), s * sinf(angle), 0.0f};
 720
 721                                 if (!upright) {
 722                                         mul_qt_v3(q, p);
 723                                 }
 724
 725                                 add_v3_v3(p, o);
 726                                 glVertex3fv(p);
 727                         }
 728                         glEnd();
 729
 730 #undef      ROT_AXIS_DETAIL
 731                 }
 732
 733                 color[3] = 1.0f;  /* solid dot */
 734         }
 735         else
 736                 color[3] = 0.5f;  /* see-through dot */
 737
 738         /* -- draw rotation center -- */
 739         glColor4fv(color);
 740         glBegin(GL_POINTS);
 741         glVertex3fv(o);
 742         glEnd();
 743
 744 #if 0
 745         /* find screen coordinates for rotation center, then draw pretty icon */
 746         mul_m4_v3(rv3d->persinv, rot_center);
 747         UI_icon_draw(rot_center[0], rot_center[1], ICON_NDOF_TURN);
 748         /* ^^ just playing around, does not work */
 749 #endif
 750
 751         glDisable(GL_BLEND);
 752         glDisable(GL_POINT_SMOOTH);
 753         glDepthMask(1);
 754 }
 755 #endif /* WITH_INPUT_NDOF */
 756
 757 static void draw_view_icon(RegionView3D *rv3d, rcti *rect)
 758 {
 759         BIFIconID icon;
 760
 761         if (ELEM(rv3d->view, RV3D_VIEW_TOP, RV3D_VIEW_BOTTOM))
 762                 icon = ICON_AXIS_TOP;
 763         else if (ELEM(rv3d->view, RV3D_VIEW_FRONT, RV3D_VIEW_BACK))
 764                 icon = ICON_AXIS_FRONT;
 765         else if (ELEM(rv3d->view, RV3D_VIEW_RIGHT, RV3D_VIEW_LEFT))
 766                 icon = ICON_AXIS_SIDE;
 767         else return;
 768
 769         glEnable(GL_BLEND);
 770         glBlendFunc(GL_SRC_ALPHA,  GL_ONE_MINUS_SRC_ALPHA);
 771
 772         UI_icon_draw(5.0 + rect->xmin, 5.0 + rect->ymin, icon);
 773
 774         glDisable(GL_BLEND);
 775 }
 776
 777 static const char *view3d_get_name(View3D *v3d, RegionView3D *rv3d)
 778 {
 779         const char *name = NULL;
 780
 781         switch (rv3d->view) {
 782                 case RV3D_VIEW_FRONT:
 783                         if (rv3d->persp == RV3D_ORTHO) name = IFACE_("Front Ortho");
 784                         else name = IFACE_("Front Persp");
 785                         break;
 786                 case RV3D_VIEW_BACK:
 787                         if (rv3d->persp == RV3D_ORTHO) name = IFACE_("Back Ortho");
 788                         else name = IFACE_("Back Persp");
 789                         break;
 790                 case RV3D_VIEW_TOP:
 791                         if (rv3d->persp == RV3D_ORTHO) name = IFACE_("Top Ortho");
 792                         else name = IFACE_("Top Persp");
 793                         break;
 794                 case RV3D_VIEW_BOTTOM:
 795                         if (rv3d->persp == RV3D_ORTHO) name = IFACE_("Bottom Ortho");
 796                         else name = IFACE_("Bottom Persp");
 797                         break;
 798                 case RV3D_VIEW_RIGHT:
 799                         if (rv3d->persp == RV3D_ORTHO) name = IFACE_("Right Ortho");
 800                         else name = IFACE_("Right Persp");
 801                         break;
 802                 case RV3D_VIEW_LEFT:
 803                         if (rv3d->persp == RV3D_ORTHO) name = IFACE_("Left Ortho");
 804                         else name = IFACE_("Left Persp");
 805                         break;
 806
 807                 default:
 808                         if (rv3d->persp == RV3D_CAMOB) {
 809                                 if ((v3d->camera) && (v3d->camera->type == OB_CAMERA)) {
 810                                         Camera *cam;
 811                                         cam = v3d->camera->data;
 812                                         if (cam->type == CAM_PERSP) {
 813                                                 name = IFACE_("Camera Persp");
 814                                         }
 815                                         else if (cam->type == CAM_ORTHO) {
 816                                                 name = IFACE_("Camera Ortho");
 817                                         }
 818                                         else {
 819                                                 BLI_assert(cam->type == CAM_PANO);
 820                                                 name = IFACE_("Camera Pano");
 821                                         }
 822                                 }
 823                                 else {
 824                                         name = IFACE_("Object as Camera");
 825                                 }
 826                         }
 827                         else {
 828                                 name = (rv3d->persp == RV3D_ORTHO) ? IFACE_("User Ortho") : IFACE_("User Persp");
 829                         }
 830                         break;
 831         }
 832
 833         return name;
 834 }
 835
 836 static void draw_viewport_name(ARegion *ar, View3D *v3d, rcti *rect)
 837 {
 838         RegionView3D *rv3d = ar->regiondata;
 839         const char *name = view3d_get_name(v3d, rv3d);
 840         /* increase size for unicode languages (Chinese in utf-8...) */
 841 #ifdef WITH_INTERNATIONAL
 842         char tmpstr[96];
 843 #else
 844         char tmpstr[32];
 845 #endif
 846
 847         if (v3d->localvd) {
 848                 BLI_snprintf(tmpstr, sizeof(tmpstr), IFACE_("%s (Local)"), name);
 849                 name = tmpstr;
 850         }
 851
 852         UI_ThemeColor(TH_TEXT_HI);
 853 #ifdef WITH_INTERNATIONAL
 854         BLF_draw_default(U.widget_unit + rect->xmin,  rect->ymax - U.widget_unit, 0.0f, name, sizeof(tmpstr));
 855 #else
 856         BLF_draw_default_ascii(U.widget_unit + rect->xmin,  rect->ymax - U.widget_unit, 0.0f, name, sizeof(tmpstr));
 857 #endif
 858 }
 859
 860 /* draw info beside axes in bottom left-corner:
 861  * framenum, object name, bone name (if available), marker name (if available)
 862  */
 863
 864 static void draw_selected_name(Scene *scene, Object *ob, rcti *rect)
 865 {
 866         const int cfra = CFRA;
 867         const char *msg_pin = " (Pinned)";
 868         const char *msg_sep = " : ";
 869
 870         char info[300];
 871         const char *markern;
 872         char *s = info;
 873         short offset = 1.5f * UI_UNIT_X + rect->xmin;
 874
 875         s += sprintf(s, "(%d)", cfra);
 876
 877         /*
 878          * info can contain:
 879          * - a frame (7 + 2)
 880          * - 3 object names (MAX_NAME)
 881          * - 2 BREAD_CRUMB_SEPARATORs (6)
 882          * - a SHAPE_KEY_PINNED marker and a trailing '\0' (9+1) - translated, so give some room!
 883          * - a marker name (MAX_NAME + 3)
 884          */
 885
 886         /* get name of marker on current frame (if available) */
 887         markern = BKE_scene_find_marker_name(scene, cfra);
 888
 889         /* check if there is an object */
 890         if (ob) {
 891                 *s++ = ' ';
 892                 s += BLI_strcpy_rlen(s, ob->id.name + 2);
 893
 894                 /* name(s) to display depends on type of object */
 895                 if (ob->type == OB_ARMATURE) {
 896                         bArmature *arm = ob->data;
 897
 898                         /* show name of active bone too (if possible) */
 899                         if (arm->edbo) {
 900                                 if (arm->act_edbone) {
 901                                         s += BLI_strcpy_rlen(s, msg_sep);
 902                                         s += BLI_strcpy_rlen(s, arm->act_edbone->name);
 903                                 }
 904                         }
 905                         else if (ob->mode & OB_MODE_POSE) {
 906                                 if (arm->act_bone) {
 907
 908                                         if (arm->act_bone->layer & arm->layer) {
 909                                                 s += BLI_strcpy_rlen(s, msg_sep);
 910                                                 s += BLI_strcpy_rlen(s, arm->act_bone->name);
 911                                         }
 912                                 }
 913                         }
 914                 }
 915                 else if (ELEM(ob->type, OB_MESH, OB_LATTICE, OB_CURVE)) {
 916                         Key *key = NULL;
 917                         KeyBlock *kb = NULL;
 918
 919                         /* try to display active bone and active shapekey too (if they exist) */
 920
 921                         if (ob->type == OB_MESH && ob->mode & OB_MODE_WEIGHT_PAINT) {
 922                                 Object *armobj = BKE_object_pose_armature_get(ob);
 923                                 if (armobj  && armobj->mode & OB_MODE_POSE) {
 924                                         bArmature *arm = armobj->data;
 925                                         if (arm->act_bone) {
 926                                                 if (arm->act_bone->layer & arm->layer) {
 927                                                         s += BLI_strcpy_rlen(s, msg_sep);
 928                                                         s += BLI_strcpy_rlen(s, arm->act_bone->name);
 929                                                 }
 930                                         }
 931                                 }
 932                         }
 933
 934                         key = BKE_key_from_object(ob);
 935                         if (key) {
 936                                 kb = BLI_findlink(&key->block, ob->shapenr - 1);
 937                                 if (kb) {
 938                                         s += BLI_strcpy_rlen(s, msg_sep);
 939                                         s += BLI_strcpy_rlen(s, kb->name);
 940                                         if (ob->shapeflag & OB_SHAPE_LOCK) {
 941                                                 s += BLI_strcpy_rlen(s, IFACE_(msg_pin));
 942                                         }
 943                                 }
 944                         }
 945                 }
 946
 947                 /* color depends on whether there is a keyframe */
 948                 if (id_frame_has_keyframe((ID *)ob, /* BKE_scene_frame_get(scene) */ (float)cfra, ANIMFILTER_KEYS_LOCAL))
 949                         UI_ThemeColor(TH_TIME_KEYFRAME);
 950                 else if (ED_gpencil_has_keyframe_v3d(scene, ob, cfra))
 951                         UI_ThemeColor(TH_TIME_GP_KEYFRAME);
 952                 else
 953                         UI_ThemeColor(TH_TEXT_HI);
 954         }
 955         else {
 956                 /* no object */
 957                 if (ED_gpencil_has_keyframe_v3d(scene, NULL, cfra))
 958                         UI_ThemeColor(TH_TIME_GP_KEYFRAME);
 959                 else
 960                         UI_ThemeColor(TH_TEXT_HI);
 961         }
 962
 963         if (markern) {
 964                 s += sprintf(s, " <%s>", markern);
 965         }
 966
 967         if (U.uiflag & USER_SHOW_ROTVIEWICON)
 968                 offset = U.widget_unit + (U.rvisize * 2) + rect->xmin;
 969
 970         BLF_draw_default(offset, 0.5f * U.widget_unit, 0.0f, info, sizeof(info));
 971 }
 972
 973 static void view3d_camera_border(
 974         const Scene *scene, const ARegion *ar, const View3D *v3d, const RegionView3D *rv3d,
 975         rctf *r_viewborder, const bool no_shift, const bool no_zoom)
 976 {
 977         CameraParams params;
 978         rctf rect_view, rect_camera;
 979
 980         /* get viewport viewplane */
 981         BKE_camera_params_init(&params);
 982         BKE_camera_params_from_view3d(&params, v3d, rv3d);
 983         if (no_zoom)
 984                 params.zoom = 1.0f;
 985         BKE_camera_params_compute_viewplane(&params, ar->winx, ar->winy, 1.0f, 1.0f);
 986         rect_view = params.viewplane;
 987
 988         /* get camera viewplane */
 989         BKE_camera_params_init(&params);
 990         /* fallback for non camera objects */
 991         params.clipsta = v3d->near;
 992         params.clipend = v3d->far;
 993         BKE_camera_params_from_object(&params, v3d->camera);
 994         if (no_shift) {
 995                 params.shiftx = 0.0f;
 996                 params.shifty = 0.0f;
 997         }
 998         BKE_camera_params_compute_viewplane(&params, scene->r.xsch, scene->r.ysch, scene->r.xasp, scene->r.yasp);
 999         rect_camera = params.viewplane;
1000
1001         /* get camera border within viewport */
1002         r_viewborder->xmin = ((rect_camera.xmin - rect_view.xmin) / BLI_rctf_size_x(&rect_view)) * ar->winx;
1003         r_viewborder->xmax = ((rect_camera.xmax - rect_view.xmin) / BLI_rctf_size_x(&rect_view)) * ar->winx;
1004         r_viewborder->ymin = ((rect_camera.ymin - rect_view.ymin) / BLI_rctf_size_y(&rect_view)) * ar->winy;
1005         r_viewborder->ymax = ((rect_camera.ymax - rect_view.ymin) / BLI_rctf_size_y(&rect_view)) * ar->winy;
1006 }
1007
1008 void ED_view3d_calc_camera_border_size(
1009         const Scene *scene, const ARegion *ar, const View3D *v3d, const RegionView3D *rv3d,
1010         float r_size[2])
1011 {
1012         rctf viewborder;
1013
1014         view3d_camera_border(scene, ar, v3d, rv3d, &viewborder, true, true);
1015         r_size[0] = BLI_rctf_size_x(&viewborder);
1016         r_size[1] = BLI_rctf_size_y(&viewborder);
1017 }
1018
1019 void ED_view3d_calc_camera_border(
1020         const Scene *scene, const ARegion *ar, const View3D *v3d, const RegionView3D *rv3d,
1021         rctf *r_viewborder, const bool no_shift)
1022 {
1023         view3d_camera_border(scene, ar, v3d, rv3d, r_viewborder, no_shift, false);
1024 }
1025
1026 static void drawviewborder_grid3(float x1, float x2, float y1, float y2, float fac)
1027 {
1028         float x3, y3, x4, y4;
1029
1030         x3 = x1 + fac * (x2 - x1);
1031         y3 = y1 + fac * (y2 - y1);
1032         x4 = x1 + (1.0f - fac) * (x2 - x1);
1033         y4 = y1 + (1.0f - fac) * (y2 - y1);
1034
1035         glBegin(GL_LINES);
1036         glVertex2f(x1, y3);
1037         glVertex2f(x2, y3);
1038
1039         glVertex2f(x1, y4);
1040         glVertex2f(x2, y4);
1041
1042         glVertex2f(x3, y1);
1043         glVertex2f(x3, y2);
1044
1045         glVertex2f(x4, y1);
1046         glVertex2f(x4, y2);
1047         glEnd();
1048 }
1049
1050 /* harmonious triangle */
1051 static void drawviewborder_triangle(float x1, float x2, float y1, float y2, const char golden, const char dir)
1052 {
1053         float ofs;
1054         float w = x2 - x1;
1055         float h = y2 - y1;
1056
1057         glBegin(GL_LINES);
1058         if (w > h) {
1059                 if (golden) {
1060                         ofs = w * (1.0f - (1.0f / 1.61803399f));
1061                 }
1062                 else {
1063                         ofs = h * (h / w);
1064                 }
1065                 if (dir == 'B') SWAP(float, y1, y2);
1066
1067                 glVertex2f(x1, y1);
1068                 glVertex2f(x2, y2);
1069
1070                 glVertex2f(x2, y1);
1071                 glVertex2f(x1 + (w - ofs), y2);
1072
1073                 glVertex2f(x1, y2);
1074                 glVertex2f(x1 + ofs, y1);
1075         }
1076         else {
1077                 if (golden) {
1078                         ofs = h * (1.0f - (1.0f / 1.61803399f));
1079                 }
1080                 else {
1081                         ofs = w * (w / h);
1082                 }
1083                 if (dir == 'B') SWAP(float, x1, x2);
1084
1085                 glVertex2f(x1, y1);
1086                 glVertex2f(x2, y2);
1087
1088                 glVertex2f(x2, y1);
1089                 glVertex2f(x1, y1 + ofs);
1090
1091                 glVertex2f(x1, y2);
1092                 glVertex2f(x2, y1 + (h - ofs));
1093         }
1094         glEnd();
1095 }
1096
1097 static void drawviewborder(Scene *scene, ARegion *ar, View3D *v3d)
1098 {
1099         float x1, x2, y1, y2;
1100         float x1i, x2i, y1i, y2i;
1101
1102         rctf viewborder;
1103         Camera *ca = NULL;
1104         RegionView3D *rv3d = ar->regiondata;
1105
1106         if (v3d->camera == NULL)
1107                 return;
1108         if (v3d->camera->type == OB_CAMERA)
1109                 ca = v3d->camera->data;
1110
1111         ED_view3d_calc_camera_border(scene, ar, v3d, rv3d, &viewborder, false);
1112         /* the offsets */
1113         x1 = viewborder.xmin;
1114         y1 = viewborder.ymin;
1115         x2 = viewborder.xmax;
1116         y2 = viewborder.ymax;
1117
1118         glLineWidth(1.0f);
1119
1120         /* apply offsets so the real 3D camera shows through */
1121
1122         /* note: quite un-scientific but without this bit extra
1123          * 0.0001 on the lower left the 2D border sometimes
1124          * obscures the 3D camera border */
1125         /* note: with VIEW3D_CAMERA_BORDER_HACK defined this error isn't noticeable
1126          * but keep it here in case we need to remove the workaround */
1127         x1i = (int)(x1 - 1.0001f);
1128         y1i = (int)(y1 - 1.0001f);
1129         x2i = (int)(x2 + (1.0f - 0.0001f));
1130         y2i = (int)(y2 + (1.0f - 0.0001f));
1131
1132         /* passepartout, specified in camera edit buttons */
1133         if (ca && (ca->flag & CAM_SHOWPASSEPARTOUT) && ca->passepartalpha > 0.000001f) {
1134                 const float winx = (ar->winx + 1);
1135                 const float winy = (ar->winy + 1);
1136
1137                 if (ca->passepartalpha == 1.0f) {
1138                         glColor3f(0, 0, 0);
1139                 }
1140                 else {
1141                         glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
1142                         glEnable(GL_BLEND);
1143                         glColor4f(0, 0, 0, ca->passepartalpha);
1144                 }
1145
1146                 if (x1i > 0.0f)
1147                         glRectf(0.0, winy, x1i, 0.0);
1148                 if (x2i < winx)
1149                         glRectf(x2i, winy, winx, 0.0);
1150                 if (y2i < winy)
1151                         glRectf(x1i, winy, x2i, y2i);
1152                 if (y2i > 0.0f)
1153                         glRectf(x1i, y1i, x2i, 0.0);
1154
1155                 glDisable(GL_BLEND);
1156         }
1157
1158         setlinestyle(0);
1159
1160         UI_ThemeColor(TH_BACK);
1161
1162         fdrawbox(x1i, y1i, x2i, y2i);
1163
1164 #ifdef VIEW3D_CAMERA_BORDER_HACK
1165         if (view3d_camera_border_hack_test == true) {
1166                 glColor3ubv(view3d_camera_border_hack_col);
1167                 fdrawbox(x1i + 1, y1i + 1, x2i - 1, y2i - 1);
1168                 view3d_camera_border_hack_test = false;
1169         }
1170 #endif
1171
1172         setlinestyle(3);
1173
1174         /* outer line not to confuse with object selecton */
1175         if (v3d->flag2 & V3D_LOCK_CAMERA) {
1176                 UI_ThemeColor(TH_REDALERT);
1177                 fdrawbox(x1i - 1, y1i - 1, x2i + 1, y2i + 1);
1178         }
1179
1180         UI_ThemeColor(TH_VIEW_OVERLAY);
1181         fdrawbox(x1i, y1i, x2i, y2i);
1182
1183         /* border */
1184         if (scene->r.mode & R_BORDER) {
1185                 float x3, y3, x4, y4;
1186
1187                 x3 = floorf(x1 + (scene->r.border.xmin * (x2 - x1))) - 1;
1188                 y3 = floorf(y1 + (scene->r.border.ymin * (y2 - y1))) - 1;
1189                 x4 = floorf(x1 + (scene->r.border.xmax * (x2 - x1))) + (U.pixelsize - 1);
1190                 y4 = floorf(y1 + (scene->r.border.ymax * (y2 - y1))) + (U.pixelsize - 1);
1191
1192                 cpack(0x4040FF);
1193                 sdrawbox(x3,  y3,  x4,  y4);
1194         }
1195
1196         /* safety border */
1197         if (ca) {
1198                 if (ca->dtx & CAM_DTX_CENTER) {
1199                         float x3, y3;
1200
1201                         UI_ThemeColorBlendShade(TH_VIEW_OVERLAY, TH_BACK, 0.25, 0);
1202
1203                         x3 = x1 + 0.5f * (x2 - x1);
1204                         y3 = y1 + 0.5f * (y2 - y1);
1205
1206                         glBegin(GL_LINES);
1207                         glVertex2f(x1, y3);
1208                         glVertex2f(x2, y3);
1209
1210                         glVertex2f(x3, y1);
1211                         glVertex2f(x3, y2);
1212                         glEnd();
1213                 }
1214
1215                 if (ca->dtx & CAM_DTX_CENTER_DIAG) {
1216                         UI_ThemeColorBlendShade(TH_VIEW_OVERLAY, TH_BACK, 0.25, 0);
1217
1218                         glBegin(GL_LINES);
1219                         glVertex2f(x1, y1);
1220                         glVertex2f(x2, y2);
1221
1222                         glVertex2f(x1, y2);
1223                         glVertex2f(x2, y1);
1224                         glEnd();
1225                 }
1226
1227                 if (ca->dtx & CAM_DTX_THIRDS) {
1228                         UI_ThemeColorBlendShade(TH_VIEW_OVERLAY, TH_BACK, 0.25, 0);
1229                         drawviewborder_grid3(x1, x2, y1, y2, 1.0f / 3.0f);
1230                 }
1231
1232                 if (ca->dtx & CAM_DTX_GOLDEN) {
1233                         UI_ThemeColorBlendShade(TH_VIEW_OVERLAY, TH_BACK, 0.25, 0);
1234                         drawviewborder_grid3(x1, x2, y1, y2, 1.0f - (1.0f / 1.61803399f));
1235                 }
1236
1237                 if (ca->dtx & CAM_DTX_GOLDEN_TRI_A) {
1238                         UI_ThemeColorBlendShade(TH_VIEW_OVERLAY, TH_BACK, 0.25, 0);
1239                         drawviewborder_triangle(x1, x2, y1, y2, 0, 'A');
1240                 }
1241
1242                 if (ca->dtx & CAM_DTX_GOLDEN_TRI_B) {
1243                         UI_ThemeColorBlendShade(TH_VIEW_OVERLAY, TH_BACK, 0.25, 0);
1244                         drawviewborder_triangle(x1, x2, y1, y2, 0, 'B');
1245                 }
1246
1247                 if (ca->dtx & CAM_DTX_HARMONY_TRI_A) {
1248                         UI_ThemeColorBlendShade(TH_VIEW_OVERLAY, TH_BACK, 0.25, 0);
1249                         drawviewborder_triangle(x1, x2, y1, y2, 1, 'A');
1250                 }
1251
1252                 if (ca->dtx & CAM_DTX_HARMONY_TRI_B) {
1253                         UI_ThemeColorBlendShade(TH_VIEW_OVERLAY, TH_BACK, 0.25, 0);
1254                         drawviewborder_triangle(x1, x2, y1, y2, 1, 'B');
1255                 }
1256
1257                 if (ca->flag & CAM_SHOW_SAFE_MARGINS) {
1258                         UI_draw_safe_areas(
1259                                 x1, x2, y1, y2,
1260                                 scene->safe_areas.title,
1261                                 scene->safe_areas.action);
1262
1263                         if (ca->flag & CAM_SHOW_SAFE_CENTER) {
1264                                 UI_draw_safe_areas(
1265                                         x1, x2, y1, y2,
1266                                         scene->safe_areas.title_center,
1267                                         scene->safe_areas.action_center);
1268                         }
1269                 }
1270
1271                 if (ca->flag & CAM_SHOWSENSOR) {
1272                         /* determine sensor fit, and get sensor x/y, for auto fit we
1273                          * assume and square sensor and only use sensor_x */
1274                         float sizex = scene->r.xsch * scene->r.xasp;
1275                         float sizey = scene->r.ysch * scene->r.yasp;
1276                         int sensor_fit = BKE_camera_sensor_fit(ca->sensor_fit, sizex, sizey);
1277                         float sensor_x = ca->sensor_x;
1278                         float sensor_y = (ca->sensor_fit == CAMERA_SENSOR_FIT_AUTO) ? ca->sensor_x : ca->sensor_y;
1279
1280                         /* determine sensor plane */
1281                         rctf rect;
1282
1283                         if (sensor_fit == CAMERA_SENSOR_FIT_HOR) {
1284                                 float sensor_scale = (x2i - x1i) / sensor_x;
1285                                 float sensor_height = sensor_scale * sensor_y;
1286
1287                                 rect.xmin = x1i;
1288                                 rect.xmax = x2i;
1289                                 rect.ymin = (y1i + y2i) * 0.5f - sensor_height * 0.5f;
1290                                 rect.ymax = rect.ymin + sensor_height;
1291                         }
1292                         else {
1293                                 float sensor_scale = (y2i - y1i) / sensor_y;
1294                                 float sensor_width = sensor_scale * sensor_x;
1295
1296                                 rect.xmin = (x1i + x2i) * 0.5f - sensor_width * 0.5f;
1297                                 rect.xmax = rect.xmin + sensor_width;
1298                                 rect.ymin = y1i;
1299                                 rect.ymax = y2i;
1300                         }
1301
1302                         /* draw */
1303                         UI_ThemeColorShade(TH_VIEW_OVERLAY, 100);
1304                         UI_draw_roundbox_gl_mode(GL_LINE_LOOP, rect.xmin, rect.ymin, rect.xmax, rect.ymax, 2.0f);
1305                 }
1306         }
1307
1308         setlinestyle(0);
1309
1310         /* camera name - draw in highlighted text color */
1311         if (ca && (ca->flag & CAM_SHOWNAME)) {
1312                 UI_ThemeColor(TH_TEXT_HI);
1313                 BLF_draw_default(
1314                         x1i, y1i - (0.7f * U.widget_unit), 0.0f,
1315                         v3d->camera->id.name + 2, sizeof(v3d->camera->id.name) - 2);
1316         }
1317 }
1318
1319 /* *********************** backdraw for selection *************** */
1320
1321 static void backdrawview3d(Scene *scene, wmWindow *win, ARegion *ar, View3D *v3d)
1322 {
1323         RegionView3D *rv3d = ar->regiondata;
1324         struct Base *base = scene->basact;
1325         int multisample_enabled;
1326
1327         BLI_assert(ar->regiontype == RGN_TYPE_WINDOW);
1328
1329         if (base && (base->object->mode & (OB_MODE_VERTEX_PAINT | OB_MODE_WEIGHT_PAINT) ||
1330                      BKE_paint_select_face_test(base->object)))
1331         {
1332                 /* do nothing */
1333         }
1334         /* texture paint mode sampling */
1335         else if (base && (base->object->mode & OB_MODE_TEXTURE_PAINT) &&
1336                  (v3d->drawtype > OB_WIRE))
1337         {
1338                 /* do nothing */
1339         }
1340         else if ((base && (base->object->mode & OB_MODE_PARTICLE_EDIT)) &&
1341                  V3D_IS_ZBUF(v3d))
1342         {
1343                 /* do nothing */
1344         }
1345         else if (scene->obedit &&
1346                  V3D_IS_ZBUF(v3d))
1347         {
1348                 /* do nothing */
1349         }
1350         else {
1351                 v3d->flag &= ~V3D_INVALID_BACKBUF;
1352                 return;
1353         }
1354
1355         if (!(v3d->flag & V3D_INVALID_BACKBUF))
1356                 return;
1357
1358 #if 0
1359         if (test) {
1360                 if (qtest()) {
1361                         addafterqueue(ar->win, BACKBUFDRAW, 1);
1362                         return;
1363                 }
1364         }
1365 #endif
1366
1367         if (v3d->drawtype > OB_WIRE) v3d->zbuf = true;
1368
1369         /* dithering and AA break color coding, so disable */
1370         glDisable(GL_DITHER);
1371
1372         multisample_enabled = glIsEnabled(GL_MULTISAMPLE);
1373         if (multisample_enabled)
1374                 glDisable(GL_MULTISAMPLE);
1375
1376         if (win->multisamples != USER_MULTISAMPLE_NONE) {
1377                 /* for multisample we use an offscreen FBO. multisample drawing can fail
1378                  * with color coded selection drawing, and reading back depths from such
1379                  * a buffer can also cause a few seconds freeze on OS X / NVidia. */
1380                 int w = BLI_rcti_size_x(&ar->winrct);
1381                 int h = BLI_rcti_size_y(&ar->winrct);
1382                 char error[256];
1383
1384                 if (rv3d->gpuoffscreen) {
1385                         if (GPU_offscreen_width(rv3d->gpuoffscreen)  != w ||
1386                             GPU_offscreen_height(rv3d->gpuoffscreen) != h)
1387                         {
1388                                 GPU_offscreen_free(rv3d->gpuoffscreen);
1389                                 rv3d->gpuoffscreen = NULL;
1390                         }
1391                 }
1392
1393                 if (!rv3d->gpuoffscreen) {
1394                         rv3d->gpuoffscreen = GPU_offscreen_create(w, h, 0, error);
1395
1396                         if (!rv3d->gpuoffscreen)
1397                                 fprintf(stderr, "Failed to create offscreen selection buffer for multisample: %s\n", error);
1398                 }
1399         }
1400
1401         if (rv3d->gpuoffscreen)
1402                 GPU_offscreen_bind(rv3d->gpuoffscreen, true);
1403         else
1404                 glScissor(ar->winrct.xmin, ar->winrct.ymin, BLI_rcti_size_x(&ar->winrct), BLI_rcti_size_y(&ar->winrct));
1405
1406         glClearColor(0.0, 0.0, 0.0, 0.0);
1407         if (v3d->zbuf) {
1408                 glEnable(GL_DEPTH_TEST);
1409                 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
1410         }
1411         else {
1412                 glClear(GL_COLOR_BUFFER_BIT);
1413                 glDisable(GL_DEPTH_TEST);
1414         }
1415
1416         if (rv3d->rflag & RV3D_CLIPPING)
1417                 ED_view3d_clipping_set(rv3d);
1418
1419         G.f |= G_BACKBUFSEL;
1420
1421         if (base && (base->lay & v3d->lay))
1422                 draw_object_backbufsel(scene, v3d, rv3d, base->object);
1423
1424         if (rv3d->gpuoffscreen)
1425                 GPU_offscreen_unbind(rv3d->gpuoffscreen, true);
1426         else
1427                 ar->swap = 0; /* mark invalid backbuf for wm draw */
1428
1429         v3d->flag &= ~V3D_INVALID_BACKBUF;
1430
1431         G.f &= ~G_BACKBUFSEL;
1432         v3d->zbuf = false;
1433         glDisable(GL_DEPTH_TEST);
1434         glEnable(GL_DITHER);
1435         if (multisample_enabled)
1436                 glEnable(GL_MULTISAMPLE);
1437
1438         if (rv3d->rflag & RV3D_CLIPPING)
1439                 ED_view3d_clipping_disable();
1440 }
1441
1442 void view3d_opengl_read_pixels(ARegion *ar, int x, int y, int w, int h, int format, int type, void *data)
1443 {
1444         RegionView3D *rv3d = ar->regiondata;
1445
1446         if (rv3d->gpuoffscreen) {
1447                 GPU_offscreen_bind(rv3d->gpuoffscreen, true);
1448                 glReadBuffer(GL_COLOR_ATTACHMENT0_EXT);
1449                 glReadPixels(x, y, w, h, format, type, data);
1450                 GPU_offscreen_unbind(rv3d->gpuoffscreen, true);
1451         }
1452         else {
1453                 glReadPixels(ar->winrct.xmin + x, ar->winrct.ymin + y, w, h, format, type, data);
1454         }
1455 }
1456
1457 /* XXX depth reading exception, for code not using gpu offscreen */
1458 static void view3d_opengl_read_Z_pixels(ARegion *ar, int x, int y, int w, int h, int format, int type, void *data)
1459 {
1460
1461         glReadPixels(ar->winrct.xmin + x, ar->winrct.ymin + y, w, h, format, type, data);
1462 }
1463
1464 void ED_view3d_backbuf_validate(ViewContext *vc)
1465 {
1466         if (vc->v3d->flag & V3D_INVALID_BACKBUF)
1467                 backdrawview3d(vc->scene, vc->win, vc->ar, vc->v3d);
1468 }
1469
1470 /**
1471  * allow for small values [0.5 - 2.5],
1472  * and large values, FLT_MAX by clamping by the area size
1473  */
1474 int ED_view3d_backbuf_sample_size_clamp(ARegion *ar, const float dist)
1475 {
1476         return (int)min_ff(ceilf(dist), (float)max_ii(ar->winx, ar->winx));
1477 }
1478
1479 /* samples a single pixel (copied from vpaint) */
1480 unsigned int ED_view3d_backbuf_sample(ViewContext *vc, int x, int y)
1481 {
1482         unsigned int col;
1483
1484         if (x >= vc->ar->winx || y >= vc->ar->winy) {
1485                 return 0;
1486         }
1487
1488         ED_view3d_backbuf_validate(vc);
1489
1490         view3d_opengl_read_pixels(vc->ar, x, y, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, &col);
1491         glReadBuffer(GL_BACK);
1492
1493         if (ENDIAN_ORDER == B_ENDIAN) {
1494                 BLI_endian_switch_uint32(&col);
1495         }
1496
1497         return GPU_select_to_index(col);
1498 }
1499
1500 /* reads full rect, converts indices */
1501 ImBuf *ED_view3d_backbuf_read(ViewContext *vc, int xmin, int ymin, int xmax, int ymax)
1502 {
1503         struct ImBuf *ibuf_clip;
1504         /* clip */
1505         const rcti clip = {
1506             max_ii(xmin, 0), min_ii(xmax, vc->ar->winx - 1),
1507             max_ii(ymin, 0), min_ii(ymax, vc->ar->winy - 1)};
1508         const int size_clip[2] = {
1509             BLI_rcti_size_x(&clip) + 1,
1510             BLI_rcti_size_y(&clip) + 1};
1511
1512         if (UNLIKELY((clip.xmin > clip.xmax) ||
1513                      (clip.ymin > clip.ymax)))
1514         {
1515                 return NULL;
1516         }
1517
1518         ibuf_clip = IMB_allocImBuf(size_clip[0], size_clip[1], 32, IB_rect);
1519
1520         ED_view3d_backbuf_validate(vc);
1521
1522         view3d_opengl_read_pixels(vc->ar, clip.xmin, clip.ymin, size_clip[0], size_clip[1], GL_RGBA, GL_UNSIGNED_BYTE, ibuf_clip->rect);
1523
1524         glReadBuffer(GL_BACK);
1525
1526         if (ENDIAN_ORDER == B_ENDIAN) {
1527                 IMB_convert_rgba_to_abgr(ibuf_clip);
1528         }
1529
1530         GPU_select_to_index_array(ibuf_clip->rect, size_clip[0] * size_clip[1]);
1531
1532         if ((clip.xmin == xmin) &&
1533             (clip.xmax == xmax) &&
1534             (clip.ymin == ymin) &&
1535             (clip.ymax == ymax))
1536         {
1537                 return ibuf_clip;
1538         }
1539         else {
1540                 /* put clipped result into a non-clipped buffer */
1541                 struct ImBuf *ibuf_full;
1542                 const int size[2] = {
1543                     (xmax - xmin + 1),
1544                     (ymax - ymin + 1)};
1545
1546                 ibuf_full = IMB_allocImBuf(size[0], size[1], 32, IB_rect);
1547
1548                 IMB_rectcpy(
1549                         ibuf_full, ibuf_clip,
1550                         clip.xmin - xmin, clip.ymin - ymin,
1551                         0, 0,
1552                         size_clip[0], size_clip[1]);
1553                 IMB_freeImBuf(ibuf_clip);
1554                 return ibuf_full;
1555         }
1556 }
1557
1558 /* smart function to sample a rect spiralling outside, nice for backbuf selection */
1559 unsigned int ED_view3d_backbuf_sample_rect(
1560         ViewContext *vc, const int mval[2], int size,
1561         unsigned int min, unsigned int max, float *r_dist)
1562 {
1563         struct ImBuf *buf;
1564         const unsigned int *bufmin, *bufmax, *tbuf;
1565         int minx, miny;
1566         int a, b, rc, nr, amount, dirvec[4][2];
1567         unsigned int index = 0;
1568
1569         amount = (size - 1) / 2;
1570
1571         minx = mval[0] - (amount + 1);
1572         miny = mval[1] - (amount + 1);
1573         buf = ED_view3d_backbuf_read(vc, minx, miny, minx + size - 1, miny + size - 1);
1574         if (!buf) return 0;
1575
1576         rc = 0;
1577
1578         dirvec[0][0] = 1; dirvec[0][1] = 0;
1579         dirvec[1][0] = 0; dirvec[1][1] = -size;
1580         dirvec[2][0] = -1; dirvec[2][1] = 0;
1581         dirvec[3][0] = 0; dirvec[3][1] = size;
1582
1583         bufmin = buf->rect;
1584         tbuf = buf->rect;
1585         bufmax = buf->rect + size * size;
1586         tbuf += amount * size + amount;
1587
1588         for (nr = 1; nr <= size; nr++) {
1589
1590                 for (a = 0; a < 2; a++) {
1591                         for (b = 0; b < nr; b++) {
1592                                 if (*tbuf && *tbuf >= min && *tbuf < max) {
1593                                         /* we got a hit */
1594
1595                                         /* get x,y pixel coords from the offset
1596                                          * (manhatten distance in keeping with other screen-based selection) */
1597                                         *r_dist = (float)(
1598                                                 abs(((int)(tbuf - buf->rect) % size) - (size / 2)) +
1599                                                 abs(((int)(tbuf - buf->rect) / size) - (size / 2)));
1600
1601                                         /* indices start at 1 here */
1602                                         index = (*tbuf - min) + 1;
1603                                         goto exit;
1604                                 }
1605
1606                                 tbuf += (dirvec[rc][0] + dirvec[rc][1]);
1607
1608                                 if (tbuf < bufmin || tbuf >= bufmax) {
1609                                         goto exit;
1610                                 }
1611                         }
1612                         rc++;
1613                         rc &= 3;
1614                 }
1615         }
1616
1617 exit:
1618         IMB_freeImBuf(buf);
1619         return index;
1620 }
1621
1622
1623 /* ************************************************************* */
1624
1625 static void view3d_stereo_bgpic_setup(Scene *scene, View3D *v3d, Image *ima, ImageUser *iuser)
1626 {
1627         if (BKE_image_is_stereo(ima)) {
1628                 iuser->flag |= IMA_SHOW_STEREO;
1629
1630                 if ((scene->r.scemode & R_MULTIVIEW) == 0) {
1631                         iuser->multiview_eye = STEREO_LEFT_ID;
1632                 }
1633                 else if (v3d->stereo3d_camera != STEREO_3D_ID) {
1634                         /* show only left or right camera */
1635                         iuser->multiview_eye = v3d->stereo3d_camera;
1636                 }
1637
1638                 BKE_image_multiview_index(ima, iuser);
1639         }
1640         else {
1641                 iuser->flag &= ~IMA_SHOW_STEREO;
1642         }
1643 }
1644
1645 static void view3d_draw_bgpic(Scene *scene, ARegion *ar, View3D *v3d,
1646                               const bool do_foreground, const bool do_camera_frame)
1647 {
1648         RegionView3D *rv3d = ar->regiondata;
1649         BGpic *bgpic;
1650         int fg_flag = do_foreground ? V3D_BGPIC_FOREGROUND : 0;
1651
1652         for (bgpic = v3d->bgpicbase.first; bgpic; bgpic = bgpic->next) {
1653                 bgpic->iuser.scene = scene;  /* Needed for render results. */
1654
1655                 if ((bgpic->flag & V3D_BGPIC_FOREGROUND) != fg_flag)
1656                         continue;
1657
1658                 if ((bgpic->view == 0) || /* zero for any */
1659                     (bgpic->view & (1 << rv3d->view)) || /* check agaist flags */
1660                     (rv3d->persp == RV3D_CAMOB && bgpic->view == (1 << RV3D_VIEW_CAMERA)))
1661                 {
1662                         float image_aspect[2];
1663                         float fac, asp, zoomx, zoomy;
1664                         float x1, y1, x2, y2, centx, centy;
1665
1666                         ImBuf *ibuf = NULL, *freeibuf, *releaseibuf;
1667                         void *lock;
1668                         rctf clip_rect;
1669
1670                         Image *ima = NULL;
1671                         MovieClip *clip = NULL;
1672
1673                         /* disable individual images */
1674                         if ((bgpic->flag & V3D_BGPIC_DISABLED))
1675                                 continue;
1676
1677                         freeibuf = NULL;
1678                         releaseibuf = NULL;
1679                         if (bgpic->source == V3D_BGPIC_IMAGE) {
1680                                 ima = bgpic->ima;
1681                                 if (ima == NULL)
1682                                         continue;
1683                                 BKE_image_user_frame_calc(&bgpic->iuser, CFRA, 0);
1684                                 if (ima->source == IMA_SRC_SEQUENCE && !(bgpic->iuser.flag & IMA_USER_FRAME_IN_RANGE)) {
1685                                         ibuf = NULL; /* frame is out of range, dont show */
1686                                 }
1687                                 else {
1688                                         view3d_stereo_bgpic_setup(scene, v3d, ima, &bgpic->iuser);
1689                                         ibuf = BKE_image_acquire_ibuf(ima, &bgpic->iuser, &lock);
1690                                         releaseibuf = ibuf;
1691                                 }
1692
1693                                 image_aspect[0] = ima->aspx;
1694                                 image_aspect[1] = ima->aspy;
1695                         }
1696                         else if (bgpic->source == V3D_BGPIC_MOVIE) {
1697                                 /* TODO: skip drawing when out of frame range (as image sequences do above) */
1698
1699                                 if (bgpic->flag & V3D_BGPIC_CAMERACLIP) {
1700                                         if (scene->camera)
1701                                                 clip = BKE_object_movieclip_get(scene, scene->camera, true);
1702                                 }
1703                                 else {
1704                                         clip = bgpic->clip;
1705                                 }
1706
1707                                 if (clip == NULL)
1708                                         continue;
1709
1710                                 BKE_movieclip_user_set_frame(&bgpic->cuser, CFRA);
1711                                 ibuf = BKE_movieclip_get_ibuf(clip, &bgpic->cuser);
1712
1713                                 image_aspect[0] = clip->aspx;
1714                                 image_aspect[1] = clip->aspy;
1715
1716                                 /* working with ibuf from image and clip has got different workflow now.
1717                                  * ibuf acquired from clip is referenced by cache system and should
1718                                  * be dereferenced after usage. */
1719                                 freeibuf = ibuf;
1720                         }
1721                         else {
1722                                 /* perhaps when loading future files... */
1723                                 BLI_assert(0);
1724                                 copy_v2_fl(image_aspect, 1.0f);
1725                         }
1726
1727                         if (ibuf == NULL)
1728                                 continue;
1729
1730                         if ((ibuf->rect == NULL && ibuf->rect_float == NULL) || ibuf->channels != 4) { /* invalid image format */
1731                                 if (freeibuf)
1732                                         IMB_freeImBuf(freeibuf);
1733                                 if (releaseibuf)
1734                                         BKE_image_release_ibuf(ima, releaseibuf, lock);
1735
1736                                 continue;
1737                         }
1738
1739                         if (ibuf->rect == NULL)
1740                                 IMB_rect_from_float(ibuf);
1741
1742                         if (rv3d->persp == RV3D_CAMOB) {
1743
1744                                 if (do_camera_frame) {
1745                                         rctf vb;
1746                                         ED_view3d_calc_camera_border(scene, ar, v3d, rv3d, &vb, false);
1747                                         x1 = vb.xmin;
1748                                         y1 = vb.ymin;
1749                                         x2 = vb.xmax;
1750                                         y2 = vb.ymax;
1751                                 }
1752                                 else {
1753                                         x1 = ar->winrct.xmin;
1754                                         y1 = ar->winrct.ymin;
1755                                         x2 = ar->winrct.xmax;
1756                                         y2 = ar->winrct.ymax;
1757                                 }
1758
1759                                 /* apply offset last - camera offset is different to offset in blender units */
1760                                 /* so this has some sane way of working - this matches camera's shift _exactly_ */
1761                                 {
1762                                         const float max_dim = max_ff(x2 - x1, y2 - y1);
1763                                         const float xof_scale = bgpic->xof * max_dim;
1764                                         const float yof_scale = bgpic->yof * max_dim;
1765
1766                                         x1 += xof_scale;
1767                                         y1 += yof_scale;
1768                                         x2 += xof_scale;
1769                                         y2 += yof_scale;
1770                                 }
1771
1772                                 centx = (x1 + x2) / 2.0f;
1773                                 centy = (y1 + y2) / 2.0f;
1774
1775                                 /* aspect correction */
1776                                 if (bgpic->flag & V3D_BGPIC_CAMERA_ASPECT) {
1777                                         /* apply aspect from clip */
1778                                         const float w_src = ibuf->x * image_aspect[0];
1779                                         const float h_src = ibuf->y * image_aspect[1];
1780
1781                                         /* destination aspect is already applied from the camera frame */
1782                                         const float w_dst = x1 - x2;
1783                                         const float h_dst = y1 - y2;
1784
1785                                         const float asp_src = w_src / h_src;
1786                                         const float asp_dst = w_dst / h_dst;
1787
1788                                         if (fabsf(asp_src - asp_dst) >= FLT_EPSILON) {
1789                                                 if ((asp_src > asp_dst) == ((bgpic->flag & V3D_BGPIC_CAMERA_CROP) != 0)) {
1790                                                         /* fit X */
1791                                                         const float div = asp_src / asp_dst;
1792                                                         x1 = ((x1 - centx) * div) + centx;
1793                                                         x2 = ((x2 - centx) * div) + centx;
1794                                                 }
1795                                                 else {
1796                                                         /* fit Y */
1797                                                         const float div = asp_dst / asp_src;
1798                                                         y1 = ((y1 - centy) * div) + centy;
1799                                                         y2 = ((y2 - centy) * div) + centy;
1800                                                 }
1801                                         }
1802                                 }
1803                         }
1804                         else {
1805                                 float tvec[3];
1806                                 float sco[2];
1807                                 const float mval_f[2] = {1.0f, 0.0f};
1808                                 const float co_zero[3] = {0};
1809                                 float zfac;
1810
1811                                 /* calc window coord */
1812                                 zfac = ED_view3d_calc_zfac(rv3d, co_zero, NULL);
1813                                 ED_view3d_win_to_delta(ar, mval_f, tvec, zfac);
1814                                 fac = max_ff(fabsf(tvec[0]), max_ff(fabsf(tvec[1]), fabsf(tvec[2]))); /* largest abs axis */
1815                                 fac = 1.0f / fac;
1816
1817                                 asp = (float)ibuf->y / (float)ibuf->x;
1818
1819                                 zero_v3(tvec);
1820                                 ED_view3d_project_float_v2_m4(ar, tvec, sco, rv3d->persmat);
1821
1822                                 x1 =  sco[0] + fac * (bgpic->xof - bgpic->size);
1823                                 y1 =  sco[1] + asp * fac * (bgpic->yof - bgpic->size);
1824                                 x2 =  sco[0] + fac * (bgpic->xof + bgpic->size);
1825                                 y2 =  sco[1] + asp * fac * (bgpic->yof + bgpic->size);
1826
1827                                 centx = (x1 + x2) / 2.0f;
1828                                 centy = (y1 + y2) / 2.0f;
1829                         }
1830
1831                         /* complete clip? */
1832                         BLI_rctf_init(&clip_rect, x1, x2, y1, y2);
1833                         if (bgpic->rotation) {
1834                                 BLI_rctf_rotate_expand(&clip_rect, &clip_rect, bgpic->rotation);
1835                         }
1836
1837                         if (clip_rect.xmax < 0 || clip_rect.ymax < 0 || clip_rect.xmin > ar->winx || clip_rect.ymin > ar->winy) {
1838                                 if (freeibuf)
1839                                         IMB_freeImBuf(freeibuf);
1840                                 if (releaseibuf)
1841                                         BKE_image_release_ibuf(ima, releaseibuf, lock);
1842
1843                                 continue;
1844                         }
1845
1846                         zoomx = (x2 - x1) / ibuf->x;
1847                         zoomy = (y2 - y1) / ibuf->y;
1848
1849                         /* for some reason; zoomlevels down refuses to use GL_ALPHA_SCALE */
1850                         if (zoomx < 1.0f || zoomy < 1.0f) {
1851                                 float tzoom = min_ff(zoomx, zoomy);
1852                                 int mip = 0;
1853
1854                                 if ((ibuf->userflags & IB_MIPMAP_INVALID) != 0) {
1855                                         IMB_remakemipmap(ibuf, 0);
1856                                         ibuf->userflags &= ~IB_MIPMAP_INVALID;
1857                                 }
1858                                 else if (ibuf->mipmap[0] == NULL)
1859                                         IMB_makemipmap(ibuf, 0);
1860
1861                                 while (tzoom < 1.0f && mip < 8 && ibuf->mipmap[mip]) {
1862                                         tzoom *= 2.0f;
1863                                         zoomx *= 2.0f;
1864                                         zoomy *= 2.0f;
1865                                         mip++;
1866                                 }
1867                                 if (mip > 0)
1868                                         ibuf = ibuf->mipmap[mip - 1];
1869                         }
1870
1871                         if (v3d->zbuf) glDisable(GL_DEPTH_TEST);
1872                         glDepthMask(0);
1873
1874                         glEnable(GL_BLEND);
1875                         glBlendFunc(GL_SRC_ALPHA,  GL_ONE_MINUS_SRC_ALPHA);
1876
1877                         glMatrixMode(GL_PROJECTION);
1878                         glPushMatrix();
1879                         glMatrixMode(GL_MODELVIEW);
1880                         glPushMatrix();
1881                         ED_region_pixelspace(ar);
1882
1883                         glTranslatef(centx, centy, 0.0);
1884                         glRotatef(RAD2DEGF(-bgpic->rotation), 0.0f, 0.0f, 1.0f);
1885
1886                         if (bgpic->flag & V3D_BGPIC_FLIP_X) {
1887                                 zoomx *= -1.0f;
1888                                 x1 = x2;
1889                         }
1890                         if (bgpic->flag & V3D_BGPIC_FLIP_Y) {
1891                                 zoomy *= -1.0f;
1892                                 y1 = y2;
1893                         }
1894                         glPixelZoom(zoomx, zoomy);
1895                         glColor4f(1.0f, 1.0f, 1.0f, 1.0f - bgpic->blend);
1896
1897                         /* could not use glaDrawPixelsAuto because it could fallback to
1898                          * glaDrawPixelsSafe in some cases, which will end up in missing
1899                          * alpha transparency for the background image (sergey)
1900                          */
1901                         glaDrawPixelsTex(x1 - centx, y1 - centy, ibuf->x, ibuf->y, GL_RGBA, GL_UNSIGNED_BYTE, GL_LINEAR, ibuf->rect);
1902
1903                         glPixelZoom(1.0, 1.0);
1904                         glPixelTransferf(GL_ALPHA_SCALE, 1.0f);
1905
1906                         glMatrixMode(GL_PROJECTION);
1907                         glPopMatrix();
1908                         glMatrixMode(GL_MODELVIEW);
1909                         glPopMatrix();
1910
1911                         glDisable(GL_BLEND);
1912
1913                         glDepthMask(1);
1914                         if (v3d->zbuf) glEnable(GL_DEPTH_TEST);
1915
1916                         if (freeibuf)
1917                                 IMB_freeImBuf(freeibuf);
1918                         if (releaseibuf)
1919                                 BKE_image_release_ibuf(ima, releaseibuf, lock);
1920                 }
1921         }
1922 }
1923
1924 static void view3d_draw_bgpic_test(Scene *scene, ARegion *ar, View3D *v3d,
1925                                    const bool do_foreground, const bool do_camera_frame)
1926 {
1927         RegionView3D *rv3d = ar->regiondata;
1928
1929         if ((v3d->flag & V3D_DISPBGPICS) == 0)
1930                 return;
1931
1932         /* disabled - mango request, since footage /w only render is quite useful
1933          * and this option is easy to disable all background images at once */
1934 #if 0
1935         if (v3d->flag2 & V3D_RENDER_OVERRIDE)
1936                 return;
1937 #endif
1938
1939         if ((rv3d->view == RV3D_VIEW_USER) || (rv3d->persp != RV3D_ORTHO)) {
1940                 if (rv3d->persp == RV3D_CAMOB) {
1941                         view3d_draw_bgpic(scene, ar, v3d, do_foreground, do_camera_frame);
1942                 }
1943         }
1944         else {
1945                 view3d_draw_bgpic(scene, ar, v3d, do_foreground, do_camera_frame);
1946         }
1947 }
1948
1949 /* ****************** View3d afterdraw *************** */
1950
1951 typedef struct View3DAfter {
1952         struct View3DAfter *next, *prev;
1953         struct Base *base;
1954         short dflag;
1955 } View3DAfter;
1956
1957 /* temp storage of Objects that need to be drawn as last */
1958 void ED_view3d_after_add(ListBase *lb, Base *base, const short dflag)
1959 {
1960         View3DAfter *v3da = MEM_callocN(sizeof(View3DAfter), "View 3d after");
1961         BLI_assert((base->flag & OB_FROMDUPLI) == 0);
1962         BLI_addtail(lb, v3da);
1963         v3da->base = base;
1964         v3da->dflag = dflag;
1965 }
1966
1967 /* disables write in zbuffer and draws it over */
1968 static void view3d_draw_transp(Scene *scene, ARegion *ar, View3D *v3d)
1969 {
1970         View3DAfter *v3da;
1971
1972         glDepthMask(GL_FALSE);
1973         v3d->transp = true;
1974
1975         while ((v3da = BLI_pophead(&v3d->afterdraw_transp))) {
1976                 draw_object(scene, ar, v3d, v3da->base, v3da->dflag);
1977                 MEM_freeN(v3da);
1978         }
1979         v3d->transp = false;
1980
1981         glDepthMask(GL_TRUE);
1982
1983 }
1984
1985 /* clears zbuffer and draws it over */
1986 static void view3d_draw_xray(Scene *scene, ARegion *ar, View3D *v3d, bool *clear)
1987 {
1988         View3DAfter *v3da;
1989
1990         if (*clear && v3d->zbuf) {
1991                 glClear(GL_DEPTH_BUFFER_BIT);
1992                 *clear = false;
1993         }
1994
1995         v3d->xray = true;
1996         while ((v3da = BLI_pophead(&v3d->afterdraw_xray))) {
1997                 draw_object(scene, ar, v3d, v3da->base, v3da->dflag);
1998                 MEM_freeN(v3da);
1999         }
2000         v3d->xray = false;
2001 }
2002
2003
2004 /* clears zbuffer and draws it over */
2005 static void view3d_draw_xraytransp(Scene *scene, ARegion *ar, View3D *v3d, const bool clear)
2006 {
2007         View3DAfter *v3da;
2008
2009         if (clear && v3d->zbuf)
2010                 glClear(GL_DEPTH_BUFFER_BIT);
2011
2012         v3d->xray = true;
2013         v3d->transp = true;
2014
2015         glDepthMask(GL_FALSE);
2016
2017         while ((v3da = BLI_pophead(&v3d->afterdraw_xraytransp))) {
2018                 draw_object(scene, ar, v3d, v3da->base, v3da->dflag);
2019                 MEM_freeN(v3da);
2020         }
2021
2022         v3d->transp = false;
2023         v3d->xray = false;
2024
2025         glDepthMask(GL_TRUE);
2026 }
2027
2028 /* clears zbuffer and draws it over,
2029  * note that in the select version we don't care about transparent flag as with regular drawing */
2030 static void view3d_draw_xray_select(Scene *scene, ARegion *ar, View3D *v3d, bool *clear)
2031 {
2032         /* Not ideal, but we need to read from the previous depths before clearing
2033          * otherwise we could have a function to load the depths after drawing.
2034          *
2035          * Clearing the depth buffer isn't all that common between drawing objects so accept this for now.
2036          */
2037         if (U.gpu_select_pick_deph) {
2038                 GPU_select_load_id(-1);
2039         }
2040
2041         View3DAfter *v3da;
2042         if (*clear && v3d->zbuf) {
2043                 glClear(GL_DEPTH_BUFFER_BIT);
2044                 *clear = false;
2045         }
2046
2047         v3d->xray = true;
2048         while ((v3da = BLI_pophead(&v3d->afterdraw_xray))) {
2049                 if (GPU_select_load_id(v3da->base->selcol)) {
2050                         draw_object_select(scene, ar, v3d, v3da->base, v3da->dflag);
2051                 }
2052                 MEM_freeN(v3da);
2053         }
2054         v3d->xray = false;
2055 }
2056
2057 /* *********************** */
2058
2059 /*
2060  * In most cases call draw_dupli_objects,
2061  * draw_dupli_objects_color was added because when drawing set dupli's
2062  * we need to force the color
2063  */
2064
2065 #if 0
2066 int dupli_ob_sort(void *arg1, void *arg2)
2067 {
2068         void *p1 = ((DupliObject *)arg1)->ob;
2069         void *p2 = ((DupliObject *)arg2)->ob;
2070         int val = 0;
2071         if (p1 < p2) val = -1;
2072         else if (p1 > p2) val = 1;
2073         return val;
2074 }
2075 #endif
2076
2077
2078 static DupliObject *dupli_step(DupliObject *dob)
2079 {
2080         while (dob && dob->no_draw)
2081                 dob = dob->next;
2082         return dob;
2083 }
2084
2085 static void draw_dupli_objects_color(
2086         Scene *scene, ARegion *ar, View3D *v3d, Base *base,
2087         const short dflag, const int color)
2088 {
2089         RegionView3D *rv3d = ar->regiondata;
2090         ListBase *lb;
2091         LodLevel *savedlod;
2092         DupliObject *dob_prev = NULL, *dob, *dob_next = NULL;
2093         Base tbase = {NULL};
2094         BoundBox bb, *bb_tmp; /* use a copy because draw_object, calls clear_mesh_caches */
2095         GLuint displist = 0;
2096         unsigned char color_rgb[3];
2097         const short dflag_dupli = dflag | DRAW_CONSTCOLOR;
2098         short transflag;
2099         bool use_displist = false;  /* -1 is initialize */
2100         char dt;
2101         short dtx;
2102         DupliApplyData *apply_data;
2103
2104         if (base->object->restrictflag & OB_RESTRICT_VIEW) return;
2105         if ((base->object->restrictflag & OB_RESTRICT_RENDER) && (v3d->flag2 & V3D_RENDER_OVERRIDE)) return;
2106
2107         if (dflag & DRAW_CONSTCOLOR) {
2108                 BLI_assert(color == TH_UNDEFINED);
2109         }
2110         else {
2111                 UI_GetThemeColorBlend3ubv(color, TH_BACK, 0.5f, color_rgb);
2112         }
2113
2114         tbase.flag = OB_FROMDUPLI | base->flag;
2115         lb = object_duplilist(G.main->eval_ctx, scene, base->object);
2116         // BLI_listbase_sort(lb, dupli_ob_sort); /* might be nice to have if we have a dupli list with mixed objects. */
2117
2118         apply_data = duplilist_apply(base->object, scene, lb);
2119
2120         dob = dupli_step(lb->first);
2121         if (dob) dob_next = dupli_step(dob->next);
2122
2123         for (; dob; dob_prev = dob, dob = dob_next, dob_next = dob_next ? dupli_step(dob_next->next) : NULL) {
2124                 bool testbb = false;
2125
2126                 tbase.object = dob->ob;
2127
2128                 /* Make sure lod is updated from dupli's position */
2129                 savedlod = dob->ob->currentlod;
2130
2131 #ifdef WITH_GAMEENGINE
2132                 if (rv3d->rflag & RV3D_IS_GAME_ENGINE) {
2133                         BKE_object_lod_update(dob->ob, rv3d->viewinv[3]);
2134                 }
2135 #endif
2136
2137                 /* extra service: draw the duplicator in drawtype of parent, minimum taken
2138                  * to allow e.g. boundbox box objects in groups for LOD */
2139                 dt = tbase.object->dt;
2140                 tbase.object->dt = MIN2(tbase.object->dt, base->object->dt);
2141
2142                 /* inherit draw extra, but not if a boundbox under the assumption that this
2143                  * is intended to speed up drawing, and drawing extra (especially wire) can
2144                  * slow it down too much */
2145                 dtx = tbase.object->dtx;
2146                 if (tbase.object->dt != OB_BOUNDBOX)
2147                         tbase.object->dtx = base->object->dtx;
2148
2149                 /* negative scale flag has to propagate */
2150                 transflag = tbase.object->transflag;
2151
2152                 if (is_negative_m4(dob->mat))
2153                         tbase.object->transflag |= OB_NEG_SCALE;
2154                 else
2155                         tbase.object->transflag &= ~OB_NEG_SCALE;
2156
2157                 /* should move outside the loop but possible color is set in draw_object still */
2158                 if ((dflag & DRAW_CONSTCOLOR) == 0) {
2159                         glColor3ubv(color_rgb);
2160                 }
2161
2162                 /* generate displist, test for new object */
2163                 if (dob_prev && dob_prev->ob != dob->ob) {
2164                         if (use_displist == true)
2165                                 glDeleteLists(displist, 1);
2166
2167                         use_displist = false;
2168                 }
2169
2170                 if ((bb_tmp = BKE_object_boundbox_get(dob->ob))) {
2171                         bb = *bb_tmp; /* must make a copy  */
2172                         testbb = true;
2173                 }
2174
2175                 if (!testbb || ED_view3d_boundbox_clip_ex(rv3d, &bb, dob->mat)) {
2176                         /* generate displist */
2177                         if (use_displist == false) {
2178
2179                                 /* note, since this was added, its checked (dob->type == OB_DUPLIGROUP)
2180                                  * however this is very slow, it was probably needed for the NLA
2181                                  * offset feature (used in group-duplicate.blend but no longer works in 2.5)
2182                                  * so for now it should be ok to - campbell */
2183
2184                                 if ( /* if this is the last no need  to make a displist */
2185                                      (dob_next == NULL || dob_next->ob != dob->ob) ||
2186                                      /* lamp drawing messes with matrices, could be handled smarter... but this works */
2187                                      (dob->ob->type == OB_LAMP) ||
2188                                      (dob->type == OB_DUPLIGROUP && dob->animated) ||
2189                                      !bb_tmp ||
2190                                      draw_glsl_material(scene, dob->ob, v3d, dt) ||
2191                                      check_object_draw_texture(scene, v3d, dt) ||
2192                                      (v3d->flag2 & V3D_SOLID_MATCAP) != 0)
2193                                 {
2194                                         // printf("draw_dupli_objects_color: skipping displist for %s\n", dob->ob->id.name + 2);
2195                                         use_displist = false;
2196                                 }
2197                                 else {
2198                                         // printf("draw_dupli_objects_color: using displist for %s\n", dob->ob->id.name + 2);
2199
2200                                         /* disable boundbox check for list creation */
2201                                         BKE_object_boundbox_flag(dob->ob, BOUNDBOX_DISABLED, 1);
2202                                         /* need this for next part of code */
2203                                         unit_m4(dob->ob->obmat);    /* obmat gets restored */
2204
2205                                         displist = glGenLists(1);
2206                                         glNewList(displist, GL_COMPILE);
2207                                         draw_object(scene, ar, v3d, &tbase, dflag_dupli);
2208                                         glEndList();
2209
2210                                         use_displist = true;
2211                                         BKE_object_boundbox_flag(dob->ob, BOUNDBOX_DISABLED, 0);
2212                                 }
2213                         }
2214
2215                         if (use_displist) {
2216                                 glPushMatrix();
2217                                 glMultMatrixf(dob->mat);
2218                                 glCallList(displist);
2219                                 glPopMatrix();
2220                         }
2221                         else {
2222                                 copy_m4_m4(dob->ob->obmat, dob->mat);
2223                                 GPU_begin_dupli_object(dob);
2224                                 draw_object(scene, ar, v3d, &tbase, dflag_dupli);
2225                                 GPU_end_dupli_object();
2226                         }
2227                 }
2228
2229                 tbase.object->dt = dt;
2230                 tbase.object->dtx = dtx;
2231                 tbase.object->transflag = transflag;
2232                 tbase.object->currentlod = savedlod;
2233         }
2234
2235         if (apply_data) {
2236                 duplilist_restore(lb, apply_data);
2237                 duplilist_free_apply_data(apply_data);
2238         }
2239
2240         free_object_duplilist(lb);
2241
2242         if (use_displist)
2243                 glDeleteLists(displist, 1);
2244 }
2245
2246 static void draw_dupli_objects(Scene *scene, ARegion *ar, View3D *v3d, Base *base)
2247 {
2248         /* define the color here so draw_dupli_objects_color can be called
2249          * from the set loop */
2250
2251         int color = (base->flag & SELECT) ? TH_SELECT : TH_WIRE;
2252         /* debug */
2253         if (base->object->dup_group && base->object->dup_group->id.us < 1)
2254                 color = TH_REDALERT;
2255
2256         draw_dupli_objects_color(scene, ar, v3d, base, 0, color);
2257 }
2258
2259 /* XXX warning, not using gpu offscreen here */
2260 void view3d_update_depths_rect(ARegion *ar, ViewDepths *d, rcti *rect)
2261 {
2262         int x, y, w, h;
2263         rcti r;
2264         /* clamp rect by region */
2265
2266         r.xmin = 0;
2267         r.xmax = ar->winx - 1;
2268         r.ymin = 0;
2269         r.ymax = ar->winy - 1;
2270
2271         /* Constrain rect to depth bounds */
2272         BLI_rcti_isect(&r, rect, rect);
2273
2274         /* assign values to compare with the ViewDepths */
2275         x = rect->xmin;
2276         y = rect->ymin;
2277
2278         w = BLI_rcti_size_x(rect);
2279         h = BLI_rcti_size_y(rect);
2280
2281         if (w <= 0 || h <= 0) {
2282                 if (d->depths)
2283                         MEM_freeN(d->depths);
2284                 d->depths = NULL;
2285
2286                 d->damaged = false;
2287         }
2288         else if (d->w != w ||
2289                  d->h != h ||
2290                  d->x != x ||
2291                  d->y != y ||
2292                  d->depths == NULL
2293                  )
2294         {
2295                 d->x = x;
2296                 d->y = y;
2297                 d->w = w;
2298                 d->h = h;
2299
2300                 if (d->depths)
2301                         MEM_freeN(d->depths);
2302
2303                 d->depths = MEM_mallocN(sizeof(float) * d->w * d->h, "View depths Subset");
2304
2305                 d->damaged = true;
2306         }
2307
2308         if (d->damaged) {
2309                 /* XXX using special function here, it doesn't use the gpu offscreen system */
2310                 view3d_opengl_read_Z_pixels(ar, d->x, d->y, d->w, d->h, GL_DEPTH_COMPONENT, GL_FLOAT, d->depths);
2311                 glGetDoublev(GL_DEPTH_RANGE, d->depth_range);
2312                 d->damaged = false;
2313         }
2314 }
2315
2316 /* note, with nouveau drivers the glReadPixels() is very slow. [#24339] */
2317 void ED_view3d_depth_update(ARegion *ar)
2318 {
2319         RegionView3D *rv3d = ar->regiondata;
2320
2321         /* Create storage for, and, if necessary, copy depth buffer */
2322         if (!rv3d->depths) rv3d->depths = MEM_callocN(sizeof(ViewDepths), "ViewDepths");
2323         if (rv3d->depths) {
2324                 ViewDepths *d = rv3d->depths;
2325                 if (d->w != ar->winx ||
2326                     d->h != ar->winy ||
2327                     !d->depths)
2328                 {
2329                         d->w = ar->winx;
2330                         d->h = ar->winy;
2331                         if (d->depths)
2332                                 MEM_freeN(d->depths);
2333                         d->depths = MEM_mallocN(sizeof(float) * d->w * d->h, "View depths");
2334                         d->damaged = true;
2335                 }
2336
2337                 if (d->damaged) {
2338                         view3d_opengl_read_pixels(ar, 0, 0, d->w, d->h, GL_DEPTH_COMPONENT, GL_FLOAT, d->depths);
2339                         glGetDoublev(GL_DEPTH_RANGE, d->depth_range);
2340
2341                         d->damaged = false;
2342                 }
2343         }
2344 }
2345
2346 /* utility function to find the closest Z value, use for autodepth */
2347 float view3d_depth_near(ViewDepths *d)
2348 {
2349         /* convert to float for comparisons */
2350         const float near = (float)d->depth_range[0];
2351         const float far_real = (float)d->depth_range[1];
2352         float far = far_real;
2353
2354         const float *depths = d->depths;
2355         float depth = FLT_MAX;
2356         int i = (int)d->w * (int)d->h; /* cast to avoid short overflow */
2357
2358         /* far is both the starting 'far' value
2359          * and the closest value found. */
2360         while (i--) {
2361                 depth = *depths++;
2362                 if ((depth < far) && (depth > near)) {
2363                         far = depth;
2364                 }
2365         }
2366
2367         return far == far_real ? FLT_MAX : far;
2368 }
2369
2370 void ED_view3d_draw_depth_gpencil(Scene *scene, ARegion *ar, View3D *v3d)
2371 {
2372         short zbuf = v3d->zbuf;
2373         RegionView3D *rv3d = ar->regiondata;
2374
2375         /* Setup view matrix. */
2376         ED_view3d_draw_setup_view(NULL, scene, ar, v3d, rv3d->winmat, rv3d->viewmat);
2377
2378         glClear(GL_DEPTH_BUFFER_BIT);
2379
2380         v3d->zbuf = true;
2381         glEnable(GL_DEPTH_TEST);
2382
2383         if (v3d->flag2 & V3D_SHOW_GPENCIL) {
2384                 ED_gpencil_draw_view3d(NULL, scene, v3d, ar, true);
2385         }
2386
2387         v3d->zbuf = zbuf;
2388 }
2389
2390 static void view3d_draw_depth_loop(Scene *scene, ARegion *ar, View3D *v3d)
2391 {
2392         Base *base;
2393
2394         /* no need for color when drawing depth buffer */
2395         const short dflag_depth = DRAW_CONSTCOLOR;
2396
2397         /* draw set first */
2398         if (scene->set) {
2399                 Scene *sce_iter;
2400                 for (SETLOOPER(scene->set, sce_iter, base)) {
2401                         if (v3d->lay & base->lay) {
2402                                 draw_object(scene, ar, v3d, base, 0);
2403                                 if (base->object->transflag & OB_DUPLI) {
2404                                         draw_dupli_objects_color(scene, ar, v3d, base, dflag_depth, TH_UNDEFINED);
2405                                 }
2406                         }
2407                 }
2408         }
2409
2410         for (base = scene->base.first; base; base = base->next) {
2411                 if (v3d->lay & base->lay) {
2412                         /* dupli drawing */
2413                         if (base->object->transflag & OB_DUPLI) {
2414                                 draw_dupli_objects_color(scene, ar, v3d, base, dflag_depth, TH_UNDEFINED);
2415                         }
2416                         draw_object(scene, ar, v3d, base, dflag_depth);
2417                 }
2418         }
2419
2420         /* this isn't that nice, draw xray objects as if they are normal */
2421         if (v3d->afterdraw_transp.first ||
2422             v3d->afterdraw_xray.first ||
2423             v3d->afterdraw_xraytransp.first)
2424         {
2425                 View3DAfter *v3da;
2426                 int mask_orig;
2427
2428                 v3d->xray = true;
2429
2430                 /* transp materials can change the depth mask, see #21388 */
2431                 glGetIntegerv(GL_DEPTH_WRITEMASK, &mask_orig);
2432
2433
2434                 if (v3d->afterdraw_xray.first || v3d->afterdraw_xraytransp.first) {
2435                         glDepthFunc(GL_ALWAYS); /* always write into the depth bufer, overwriting front z values */
2436                         for (v3da = v3d->afterdraw_xray.first; v3da; v3da = v3da->next) {
2437                                 draw_object(scene, ar, v3d, v3da->base, dflag_depth);
2438                         }
2439                         glDepthFunc(GL_LEQUAL); /* Now write the depth buffer normally */
2440                 }
2441
2442                 /* draw 3 passes, transp/xray/xraytransp */
2443                 v3d->xray = false;
2444                 v3d->transp = true;
2445                 while ((v3da = BLI_pophead(&v3d->afterdraw_transp))) {
2446                         draw_object(scene, ar, v3d, v3da->base, dflag_depth);
2447                         MEM_freeN(v3da);
2448                 }
2449
2450                 v3d->xray = true;
2451                 v3d->transp = false;
2452                 while ((v3da = BLI_pophead(&v3d->afterdraw_xray))) {
2453                         draw_object(scene, ar, v3d, v3da->base, dflag_depth);
2454                         MEM_freeN(v3da);
2455                 }
2456
2457                 v3d->xray = true;
2458                 v3d->transp = true;
2459                 while ((v3da = BLI_pophead(&v3d->afterdraw_xraytransp))) {
2460                         draw_object(scene, ar, v3d, v3da->base, dflag_depth);
2461                         MEM_freeN(v3da);
2462                 }
2463
2464
2465                 v3d->xray = false;
2466                 v3d->transp = false;
2467
2468                 glDepthMask(mask_orig);
2469         }
2470 }
2471
2472 void ED_view3d_draw_depth(Scene *scene, ARegion *ar, View3D *v3d, bool alphaoverride)
2473 {
2474         RegionView3D *rv3d = ar->regiondata;
2475         short zbuf = v3d->zbuf;
2476         short flag = v3d->flag;
2477         float glalphaclip = U.glalphaclip;
2478         int obcenter_dia = U.obcenter_dia;
2479         /* temp set drawtype to solid */
2480
2481         /* Setting these temporarily is not nice */
2482         v3d->flag &= ~V3D_SELECT_OUTLINE;
2483         U.glalphaclip = alphaoverride ? 0.5f : glalphaclip; /* not that nice but means we wont zoom into billboards */
2484         U.obcenter_dia = 0;
2485
2486         /* Setup view matrix. */
2487         ED_view3d_draw_setup_view(NULL, scene, ar, v3d, rv3d->viewmat, rv3d->winmat);
2488
2489         glClear(GL_DEPTH_BUFFER_BIT);
2490
2491         if (rv3d->rflag & RV3D_CLIPPING) {
2492                 ED_view3d_clipping_set(rv3d);
2493         }
2494         /* get surface depth without bias */
2495         rv3d->rflag |= RV3D_ZOFFSET_DISABLED;
2496
2497         v3d->zbuf = true;
2498         glEnable(GL_DEPTH_TEST);
2499
2500         view3d_draw_depth_loop(scene, ar, v3d);
2501
2502         if (rv3d->rflag & RV3D_CLIPPING) {
2503                 ED_view3d_clipping_disable();
2504         }
2505         rv3d->rflag &= ~RV3D_ZOFFSET_DISABLED;
2506
2507         v3d->zbuf = zbuf;
2508         if (!v3d->zbuf) glDisable(GL_DEPTH_TEST);
2509
2510         U.glalphaclip = glalphaclip;
2511         v3d->flag = flag;
2512         U.obcenter_dia = obcenter_dia;
2513 }
2514
2515 void ED_view3d_draw_select_loop(
2516         ViewContext *vc, Scene *scene, View3D *v3d, ARegion *ar,
2517         bool use_obedit_skip, bool use_nearest)
2518 {
2519         short code = 1;
2520         const short dflag = DRAW_PICKING | DRAW_CONSTCOLOR;
2521
2522         if (vc->obedit && vc->obedit->type == OB_MBALL) {
2523                 draw_object(scene, ar, v3d, BASACT, dflag);
2524         }
2525         else if ((vc->obedit && vc->obedit->type == OB_ARMATURE)) {
2526                 /* if not drawing sketch, draw bones */
2527                 if (!BDR_drawSketchNames(vc)) {
2528                         draw_object(scene, ar, v3d, BASACT, dflag);
2529                 }
2530         }
2531         else {
2532                 Base *base;
2533
2534                 for (base = scene->base.first; base; base = base->next) {
2535                         if (base->lay & v3d->lay) {
2536
2537                                 if ((base->object->restrictflag & OB_RESTRICT_SELECT) ||
2538                                     (use_obedit_skip && (scene->obedit->data == base->object->data)))
2539                                 {
2540                                         base->selcol = 0;
2541                                 }
2542                                 else {
2543                                         base->selcol = code;
2544
2545                                         if (use_nearest && (base->object->dtx & OB_DRAWXRAY)) {
2546                                                 ED_view3d_after_add(&v3d->afterdraw_xray, base, dflag);
2547                                         }
2548                                         else {
2549                                                 if (GPU_select_load_id(code)) {
2550                                                         draw_object_select(scene, ar, v3d, base, dflag);
2551                                                 }
2552                                         }
2553                                         code++;
2554                                 }
2555                         }
2556                 }
2557
2558                 if (use_nearest) {
2559                         bool xrayclear = true;
2560                         if (v3d->afterdraw_xray.first) {
2561                                 view3d_draw_xray_select(scene, ar, v3d, &xrayclear);
2562                         }
2563                 }
2564         }
2565 }
2566
2567 typedef struct View3DShadow {
2568         struct View3DShadow *next, *prev;
2569         GPULamp *lamp;
2570 } View3DShadow;
2571
2572 static void gpu_render_lamp_update(Scene *scene, View3D *v3d,
2573                                    Object *ob, Object *par,
2574                                    float obmat[4][4], unsigned int lay,
2575                                    ListBase *shadows, SceneRenderLayer *srl)
2576 {
2577         GPULamp *lamp;
2578         Lamp *la = (Lamp *)ob->data;
2579         View3DShadow *shadow;
2580         unsigned int layers;
2581
2582         lamp = GPU_lamp_from_blender(scene, ob, par);
2583
2584         if (lamp) {
2585                 GPU_lamp_update(lamp, lay, (ob->restrictflag & OB_RESTRICT_RENDER), obmat);
2586                 GPU_lamp_update_colors(lamp, la->r, la->g, la->b, la->energy);
2587
2588                 layers = lay & v3d->lay;
2589                 if (srl)
2590                         layers &= srl->lay;
2591
2592                 if (layers &&
2593                     GPU_lamp_has_shadow_buffer(lamp) &&
2594                     /* keep last, may do string lookup */
2595                     GPU_lamp_override_visible(lamp, srl, NULL))
2596                 {
2597                         shadow = MEM_callocN(sizeof(View3DShadow), "View3DShadow");
2598                         shadow->lamp = lamp;
2599                         BLI_addtail(shadows, shadow);
2600                 }
2601         }
2602 }
2603
2604 static void gpu_update_lamps_shadows_world(Scene *scene, View3D *v3d)
2605 {
2606         ListBase shadows;
2607         View3DShadow *shadow;
2608         Scene *sce_iter;
2609         Base *base;
2610         Object *ob;
2611         World *world = scene->world;
2612         SceneRenderLayer *srl = v3d->scenelock ? BLI_findlink(&scene->r.layers, scene->r.actlay) : NULL;
2613
2614         BLI_listbase_clear(&shadows);
2615
2616         /* update lamp transform and gather shadow lamps */
2617         for (SETLOOPER(scene, sce_iter, base)) {
2618                 ob = base->object;
2619
2620                 if (ob->type == OB_LAMP)
2621                         gpu_render_lamp_update(scene, v3d, ob, NULL, ob->obmat, ob->lay, &shadows, srl);
2622
2623                 if (ob->transflag & OB_DUPLI) {
2624                         DupliObject *dob;
2625                         ListBase *lb = object_duplilist(G.main->eval_ctx, scene, ob);
2626
2627                         for (dob = lb->first; dob; dob = dob->next)
2628                                 if (dob->ob->type == OB_LAMP)
2629                                         gpu_render_lamp_update(scene, v3d, dob->ob, ob, dob->mat, ob->lay, &shadows, srl);
2630
2631                         free_object_duplilist(lb);
2632                 }
2633         }
2634
2635         /* render shadows after updating all lamps, nested object_duplilist
2636          * don't work correct since it's replacing object matrices */
2637         for (shadow = shadows.first; shadow; shadow = shadow->next) {
2638                 /* this needs to be done better .. */
2639                 float viewmat[4][4], winmat[4][4];
2640                 int drawtype, lay, winsize, flag2 = v3d->flag2;
2641                 ARegion ar = {NULL};
2642                 RegionView3D rv3d = {{{0}}};
2643
2644                 drawtype = v3d->drawtype;
2645                 lay = v3d->lay;
2646
2647                 v3d->drawtype = OB_SOLID;
2648                 v3d->lay &= GPU_lamp_shadow_layer(shadow->lamp);
2649                 v3d->flag2 &= ~(V3D_SOLID_TEX | V3D_SHOW_SOLID_MATCAP);
2650                 v3d->flag2 |= V3D_RENDER_OVERRIDE | V3D_RENDER_SHADOW;
2651
2652                 GPU_lamp_shadow_buffer_bind(shadow->lamp, viewmat, &winsize, winmat);
2653
2654                 ar.regiondata = &rv3d;
2655                 ar.regiontype = RGN_TYPE_WINDOW;
2656                 rv3d.persp = RV3D_CAMOB;
2657                 copy_m4_m4(rv3d.winmat, winmat);
2658                 copy_m4_m4(rv3d.viewmat, viewmat);
2659                 invert_m4_m4(rv3d.viewinv, rv3d.viewmat);
2660                 mul_m4_m4m4(rv3d.persmat, rv3d.winmat, rv3d.viewmat);
2661                 invert_m4_m4(rv3d.persinv, rv3d.viewinv);
2662
2663                 /* no need to call ED_view3d_draw_offscreen_init since shadow buffers were already updated */
2664                 ED_view3d_draw_offscreen(
2665                             scene, v3d, &ar, winsize, winsize, viewmat, winmat,
2666                             false, false, true,
2667                             NULL, NULL, NULL, NULL);
2668                 GPU_lamp_shadow_buffer_unbind(shadow->lamp);
2669
2670                 v3d->drawtype = drawtype;
2671                 v3d->lay = lay;
2672                 v3d->flag2 = flag2;
2673         }
2674
2675         BLI_freelistN(&shadows);
2676
2677         /* update world values */
2678         if (world) {
2679                 GPU_mist_update_enable(world->mode & WO_MIST);
2680                 GPU_mist_update_values(world->mistype, world->miststa, world->mistdist, world->misi, &world->horr);
2681                 GPU_horizon_update_color(&world->horr);
2682                 GPU_ambient_update_color(&world->ambr);
2683                 GPU_zenith_update_color(&world->zenr);
2684         }
2685 }
2686
2687 /* *********************** customdata **************** */
2688
2689 CustomDataMask ED_view3d_datamask(const Scene *scene, const View3D *v3d)
2690 {
2691         CustomDataMask mask = 0;
2692         const int drawtype = view3d_effective_drawtype(v3d);
2693
2694         if (ELEM(drawtype, OB_TEXTURE, OB_MATERIAL) ||
2695             ((drawtype == OB_SOLID) && (v3d->flag2 & V3D_SOLID_TEX)))
2696         {
2697                 mask |= CD_MASK_MTEXPOLY | CD_MASK_MLOOPUV | CD_MASK_MLOOPCOL;
2698
2699                 if (BKE_scene_use_new_shading_nodes(scene)) {
2700                         if (drawtype == OB_MATERIAL)
2701                                 mask |= CD_MASK_ORCO;
2702                 }
2703                 else {
2704                         if ((scene->gm.matmode == GAME_MAT_GLSL && drawtype == OB_TEXTURE) ||
2705                             (drawtype == OB_MATERIAL))
2706                         {
2707                                 mask |= CD_MASK_ORCO;
2708                         }
2709                 }
2710         }
2711
2712         return mask;
2713 }
2714
2715 /* goes over all modes and view3d settings */
2716 CustomDataMask ED_view3d_screen_datamask(const bScreen *screen)
2717 {
2718         const Scene *scene = screen->scene;
2719         CustomDataMask mask = CD_MASK_BAREMESH;
2720         const ScrArea *sa;
2721
2722         /* check if we need tfaces & mcols due to view mode */
2723         for (sa = screen->areabase.first; sa; sa = sa->next) {
2724                 if (sa->spacetype == SPACE_VIEW3D) {
2725                         mask |= ED_view3d_datamask(scene, sa->spacedata.first);
2726                 }
2727         }
2728
2729         return mask;
2730 }
2731
2732 /**
2733  * \note keep this synced with #ED_view3d_mats_rv3d_backup/#ED_view3d_mats_rv3d_restore
2734  */
2735 void ED_view3d_update_viewmat(Scene *scene, View3D *v3d, ARegion *ar, float viewmat[4][4], float winmat[4][4])
2736 {
2737         RegionView3D *rv3d = ar->regiondata;
2738
2739         /* setup window matrices */
2740         if (winmat)
2741                 copy_m4_m4(rv3d->winmat, winmat);
2742         else
2743                 view3d_winmatrix_set(ar, v3d, NULL);
2744
2745         /* setup view matrix */
2746         if (viewmat)
2747                 copy_m4_m4(rv3d->viewmat, viewmat);
2748         else
2749                 view3d_viewmatrix_set(scene, v3d, rv3d);  /* note: calls BKE_object_where_is_calc for camera... */
2750
2751         /* update utility matrices */
2752         mul_m4_m4m4(rv3d->persmat, rv3d->winmat, rv3d->viewmat);
2753         invert_m4_m4(rv3d->persinv, rv3d->persmat);
2754         invert_m4_m4(rv3d->viewinv, rv3d->viewmat);
2755
2756         /* calculate GLSL view dependent values */
2757
2758         /* store window coordinates scaling/offset */
2759         if (rv3d->persp == RV3D_CAMOB && v3d->camera) {
2760                 rctf cameraborder;
2761                 ED_view3d_calc_camera_border(scene, ar, v3d, rv3d, &cameraborder, false);
2762                 rv3d->viewcamtexcofac[0] = (float)ar->winx / BLI_rctf_size_x(&cameraborder);
2763                 rv3d->viewcamtexcofac[1] = (float)ar->winy / BLI_rctf_size_y(&cameraborder);
2764
2765                 rv3d->viewcamtexcofac[2] = -rv3d->viewcamtexcofac[0] * cameraborder.xmin / (float)ar->winx;
2766                 rv3d->viewcamtexcofac[3] = -rv3d->viewcamtexcofac[1] * cameraborder.ymin / (float)ar->winy;
2767         }
2768         else {
2769                 rv3d->viewcamtexcofac[0] = rv3d->viewcamtexcofac[1] = 1.0f;
2770                 rv3d->viewcamtexcofac[2] = rv3d->viewcamtexcofac[3] = 0.0f;
2771         }
2772
2773         /**
2774          * Calculate pixel-size factor once, is used for lamps and object centers.
2775          * Used by #ED_view3d_pixel_size and typically not accessed directly.
2776          *
2777          * \note #BKE_camera_params_compute_viewplane' also calculates a pixel-size value,
2778          * passed to #RE_SetPixelSize, in ortho mode this is compatible with this value,
2779          * but in perspective mode its offset by the near-clip.
2780          *
2781          * 'RegionView3D.pixsize' is used for viewport drawing, not rendering.
2782          */
2783         {
2784                 /* note:  '1.0f / len_v3(v1)'  replaced  'len_v3(rv3d->viewmat[0])'
2785                  * because of float point precision problems at large values [#23908] */
2786                 float v1[3], v2[3];
2787                 float len_px, len_sc;
2788
2789                 v1[0] = rv3d->persmat[0][0];
2790                 v1[1] = rv3d->persmat[1][0];
2791                 v1[2] = rv3d->persmat[2][0];
2792
2793                 v2[0] = rv3d->persmat[0][1];
2794                 v2[1] = rv3d->persmat[1][1];
2795                 v2[2] = rv3d->persmat[2][1];
2796
2797                 len_px = 2.0f / sqrtf(min_ff(len_squared_v3(v1), len_squared_v3(v2)));
2798                 len_sc = (float)MAX2(ar->winx, ar->winy);
2799
2800                 rv3d->pixsize = len_px / len_sc;
2801         }
2802 }
2803
2804 /**
2805  * Shared by #ED_view3d_draw_offscreen and #view3d_main_region_draw_objects
2806  *
2807  * \note \a C and \a grid_unit will be NULL when \a draw_offscreen is set.
2808  * \note Drawing lamps and opengl render uses this, so dont do grease pencil or view widgets here.
2809  */
2810 static void view3d_draw_objects(
2811         const bContext *C,
2812         Scene *scene, View3D *v3d, ARegion *ar,
2813         const char **grid_unit,
2814         const bool do_bgpic, const bool draw_offscreen, GPUFX *fx)
2815 {
2816         RegionView3D *rv3d = ar->regiondata;
2817         Base *base;
2818         const bool do_camera_frame = !draw_offscreen;
2819         const bool draw_grids = !draw_offscreen && (v3d->flag2 & V3D_RENDER_OVERRIDE) == 0;
2820         const bool draw_floor = (rv3d->view == RV3D_VIEW_USER) || (rv3d->persp != RV3D_ORTHO);
2821         /* only draw grids after in solid modes, else it hovers over mesh wires */
2822         const bool draw_grids_after = draw_grids && draw_floor && (v3d->drawtype > OB_WIRE) && fx;
2823         bool do_composite_xray = false;
2824         bool xrayclear = true;
2825
2826         if (!draw_offscreen) {
2827                 ED_region_draw_cb_draw(C, ar, REGION_DRAW_PRE_VIEW);
2828         }
2829
2830         if (rv3d->rflag & RV3D_CLIPPING)
2831                 view3d_draw_clipping(rv3d);
2832
2833         /* set zbuffer after we draw clipping region */
2834         if (v3d->drawtype > OB_WIRE) {
2835                 v3d->zbuf = true;
2836         }
2837         else {
2838                 v3d->zbuf = false;
2839         }
2840
2841         /* special case (depth for wire color) */
2842         if (v3d->drawtype <= OB_WIRE) {
2843                 if (scene->obedit && scene->obedit->type == OB_MESH) {
2844                         Mesh *me = scene->obedit->data;
2845                         if (me->drawflag & ME_DRAWEIGHT) {
2846                                 v3d->zbuf = true;
2847                         }
2848                 }
2849         }
2850
2851         if (v3d->zbuf) {
2852                 glEnable(GL_DEPTH_TEST);
2853         }
2854
2855         /* ortho grid goes first, does not write to depth buffer and doesn't need depth test so it will override
2856          * objects if done last */
2857         if (draw_grids) {
2858                 /* needs to be done always, gridview is adjusted in drawgrid() now, but only for ortho views. */
2859                 rv3d->gridview = ED_view3d_grid_scale(scene, v3d, grid_unit);
2860
2861                 if (!draw_floor) {
2862                         ED_region_pixelspace(ar);
2863                         *grid_unit = NULL;  /* drawgrid need this to detect/affect smallest valid unit... */
2864                         drawgrid(&scene->unit, ar, v3d, grid_unit);
2865                         /* XXX make function? replaces persp(1) */
2866                         glMatrixMode(GL_PROJECTION);
2867                         glLoadMatrixf(rv3d->winmat);
2868                         glMatrixMode(GL_MODELVIEW);
2869                         glLoadMatrixf(rv3d->viewmat);
2870                 }
2871                 else if (!draw_grids_after) {
2872                         drawfloor(scene, v3d, grid_unit, true);
2873                 }
2874         }
2875
2876         /* important to do before clipping */
2877         if (do_bgpic) {
2878                 view3d_draw_bgpic_test(scene, ar, v3d, false, do_camera_frame);
2879         }
2880
2881         if (rv3d->rflag & RV3D_CLIPPING) {
2882                 ED_view3d_clipping_set(rv3d);
2883         }
2884
2885         /* draw set first */
2886         if (scene->set) {
2887                 const short dflag = DRAW_CONSTCOLOR | DRAW_SCENESET;
2888                 Scene *sce_iter;
2889                 for (SETLOOPER(scene->set, sce_iter, base)) {
2890                         if (v3d->lay & base->lay) {
2891                                 UI_ThemeColorBlend(TH_WIRE, TH_BACK, 0.6f);
2892                                 draw_object(scene, ar, v3d, base, dflag);
2893
2894                                 if (base->object->transflag & OB_DUPLI) {
2895                                         draw_dupli_objects_color(scene, ar, v3d, base, dflag, TH_UNDEFINED);
2896                                 }
2897                         }
2898                 }
2899
2900                 /* Transp and X-ray afterdraw stuff for sets is done later */
2901         }
2902
2903
2904         if (draw_offscreen) {
2905                 for (base = scene->base.first; base; base = base->next) {
2906                         if (v3d->lay & base->lay) {
2907                                 /* dupli drawing */
2908                                 if (base->object->transflag & OB_DUPLI)
2909                                         draw_dupli_objects(scene, ar, v3d, base);
2910
2911                                 draw_object(scene, ar, v3d, base, 0);
2912                         }
2913                 }
2914         }
2915         else {
2916                 unsigned int lay_used = 0;
2917
2918                 /* then draw not selected and the duplis, but skip editmode object */
2919                 for (base = scene->base.first; base; base = base->next) {
2920                         lay_used |= base->lay;
2921
2922                         if (v3d->lay & base->lay) {
2923
2924                                 /* dupli drawing */
2925                                 if (base->object->transflag & OB_DUPLI) {
2926                                         draw_dupli_objects(scene, ar, v3d, base);
2927                                 }
2928                                 if ((base->flag & SELECT) == 0) {
2929                                         if (base->object != scene->obedit)
2930                                                 draw_object(scene, ar, v3d, base, 0);
2931                                 }
2932                         }
2933                 }
2934
2935                 /* mask out localview */
2936                 v3d->lay_used = lay_used & ((1 << 20) - 1);
2937
2938                 /* draw selected and editmode */
2939                 for (base = scene->base.first; base; base = base->next) {
2940                         if (v3d->lay & base->lay) {
2941                                 if (base->object == scene->obedit || (base->flag & SELECT)) {
2942                                         draw_object(scene, ar, v3d, base, 0);
2943                                 }
2944                         }
2945                 }
2946         }
2947
2948         /* perspective floor goes last to use scene depth and avoid writing to depth buffer */
2949         if (draw_grids_after) {
2950                 drawfloor(scene, v3d, grid_unit, false);
2951         }
2952
2953         /* must be before xray draw which clears the depth buffer */
2954         if (v3d->flag2 & V3D_SHOW_GPENCIL) {
2955                 wmWindowManager *wm = (C != NULL) ? CTX_wm_manager(C) : NULL;
2956
2957                 /* must be before xray draw which clears the depth buffer */
2958                 if (v3d->zbuf) glDisable(GL_DEPTH_TEST);
2959                 ED_gpencil_draw_view3d(wm, scene, v3d, ar, true);
2960                 if (v3d->zbuf) glEnable(GL_DEPTH_TEST);
2961         }
2962
2963         /* transp and X-ray afterdraw stuff */
2964         if (v3d->afterdraw_transp.first)     view3d_draw_transp(scene, ar, v3d);
2965
2966         /* always do that here to cleanup depth buffers if none needed */
2967         if (fx) {
2968                 do_composite_xray = v3d->zbuf && (v3d->afterdraw_xray.first || v3d->afterdraw_xraytransp.first);
2969                 GPU_fx_compositor_setup_XRay_pass(fx, do_composite_xray);
2970         }
2971
2972         if (v3d->afterdraw_xray.first)       view3d_draw_xray(scene, ar, v3d, &xrayclear);
2973         if (v3d->afterdraw_xraytransp.first) view3d_draw_xraytransp(scene, ar, v3d, xrayclear);
2974
2975         if (fx && do_composite_xray) {
2976                 GPU_fx_compositor_XRay_resolve(fx);
2977         }
2978
2979         if (!draw_offscreen) {
2980                 ED_region_draw_cb_draw(C, ar, REGION_DRAW_POST_VIEW);
2981         }
2982
2983         if (rv3d->rflag & RV3D_CLIPPING)
2984                 ED_view3d_clipping_disable();
2985
2986         /* important to do after clipping */
2987         if (do_bgpic) {
2988                 view3d_draw_bgpic_test(scene, ar, v3d, true, do_camera_frame);
2989         }
2990
2991         if (!draw_offscreen) {
2992                 BIF_draw_manipulator(C);
2993         }
2994
2995         /* cleanup */
2996         if (v3d->zbuf) {
2997                 v3d->zbuf = false;
2998                 glDisable(GL_DEPTH_TEST);
2999         }
3000
3001         if ((v3d->flag2 & V3D_RENDER_SHADOW) == 0) {
3002                 GPU_free_images_old();
3003         }
3004 }
3005
3006 static void view3d_main_region_setup_view(Scene *scene, View3D *v3d, ARegion *ar, float viewmat[4][4], float winmat[4][4])
3007 {
3008         RegionView3D *rv3d = ar->regiondata;
3009
3010         ED_view3d_update_viewmat(scene, v3d, ar, viewmat, winmat);
3011
3012         /* set for opengl */
3013         glMatrixMode(GL_PROJECTION);
3014         glLoadMatrixf(rv3d->winmat);
3015         glMatrixMode(GL_MODELVIEW);
3016         glLoadMatrixf(rv3d->viewmat);
3017 }
3018
3019 /**
3020  * Store values from #RegionView3D, set when drawing.
3021  * This is needed when we draw with to a viewport using a different matrix (offscreen drawing for example).
3022  *
3023  * Values set by #ED_view3d_update_viewmat should be handled here.
3024  */
3025 struct RV3DMatrixStore {
3026         float winmat[4][4];
3027         float viewmat[4][4];
3028         float viewinv[4][4];
3029         float persmat[4][4];
3030         float persinv[4][4];
3031         float viewcamtexcofac[4];
3032         float pixsize;
3033 };
3034
3035 struct RV3DMatrixStore *ED_view3d_mats_rv3d_backup(struct RegionView3D *rv3d)
3036 {
3037         struct RV3DMatrixStore *rv3dmat = MEM_mallocN(sizeof(*rv3dmat), __func__);
3038         copy_m4_m4(rv3dmat->winmat, rv3d->winmat);
3039         copy_m4_m4(rv3dmat->viewmat, rv3d->viewmat);
3040         copy_m4_m4(rv3dmat->persmat, rv3d->persmat);
3041         copy_m4_m4(rv3dmat->persinv, rv3d->persinv);
3042         copy_m4_m4(rv3dmat->viewinv, rv3d->viewinv);
3043         copy_v4_v4(rv3dmat->viewcamtexcofac, rv3d->viewcamtexcofac);
3044         rv3dmat->pixsize = rv3d->pixsize;
3045         return (void *)rv3dmat;
3046 }
3047
3048 void ED_view3d_mats_rv3d_restore(struct RegionView3D *rv3d, struct RV3DMatrixStore *rv3dmat)
3049 {
3050         copy_m4_m4(rv3d->winmat, rv3dmat->winmat);
3051         copy_m4_m4(rv3d->viewmat, rv3dmat->viewmat);
3052